Disk/Washer vs. Cylindrical Shell...when to use which?

  Рет қаралды 167,041

Quoc Dat Phung

Quoc Dat Phung

Күн бұрын

Пікірлер: 187
@airdropselenium1948
@airdropselenium1948 2 жыл бұрын
This guy was smiling explaining math concepts hahah, must like math that much. Encouraging to see, thanks!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thanks Airdrop! Please support me by subscribing , it means a lot! Don't forget to share with your classmates too!
@SodiumOverdose
@SodiumOverdose 10 ай бұрын
Fr it makes me wanna try harder
@nachiket481
@nachiket481 2 жыл бұрын
SO CLEAR ! Wonderful illustrations, just wonderful, along with the clear and enthusiastic explanation! This made the whole idea much easier to digest. Thank you and have a great day !
@nachiket481
@nachiket481 2 жыл бұрын
I also watched the whole thing which is rare for math videos Haha.
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
@@nachiket481 Thank you so much! Please don't forget to share with your friends if they're also taking Calculus!
@Druuuv_01
@Druuuv_01 Жыл бұрын
Exactly the kind of vid I was looking for before my exam. 🐐❤
@QuocDatPhung
@QuocDatPhung Жыл бұрын
I'm so glad this helped Dhruv! You can refer to my entire Calculus playlist here (and please kindly subscribe too!): kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@katelynwong9429
@katelynwong9429 2 жыл бұрын
This video was super helpful and easy to understand! I have been confused on shells for a while now, and you helped me fully understand the concept in only 13 minutes. Thank you so much!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you so much Katelyn! Please don't forget to subscribe and share this video with your friends if they are taking Calculus 2 as well!
@abigaildejuan1549
@abigaildejuan1549 Жыл бұрын
Man I hope you live a happy and contented life. You're doing wonders bro this is sooo clear and easy to digest for a math dumbo like me 😭.
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thanks so much Abigail! I hope your life is filled with happiness also! I'm just lucky to have good professors haha. If you want to see the rest of my Calculus videos, you can find all of them here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@stealthworx4371
@stealthworx4371 2 жыл бұрын
Bro you are a legend especially the 2nd cylindrical shell example you used! that tip about which formula to use in which situation is GOLD.
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thanks a million StealthWorx! Your comment means so much to me :)))) Please smash that subscribe button and also share with your classmates to help them too! You can find all my calculus videos in this playlist here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@mariaalejandragaubeca2501
@mariaalejandragaubeca2501 2 жыл бұрын
the vibe you give in this video is immaculate
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Maria! Please subscribe to support me :)))))
@MiraiSama506
@MiraiSama506 3 жыл бұрын
I like how you keep smiling this give me good energy 💛
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
Aww thank you! Don't forget to subscribe hehe :D😁
@jeremiahfink5440
@jeremiahfink5440 3 жыл бұрын
using the axis of cross section to determine which variable to integrate in respect to was the best advice any one could get on this subject. ty
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
Thanks! Don't forget to subscribe!
@tinaturner247
@tinaturner247 2 жыл бұрын
Now a lifelong subscriber. You're a life saver!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
I'm very happy to hear that! Thank you Cassandra! Please don't forget to share with anyone who's also going over these concepts!
@christinayang2231
@christinayang2231 3 жыл бұрын
This is the most beautiful and clear video I've seen so far. Thank you so much!
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
Thank you so much! Please subscribe if you found it helpful!
@brookemueller699
@brookemueller699 3 жыл бұрын
This is much easier to follow than other videos I’ve seen. Love this so much and you helped me understand this concept before my exam today!! Many thanks 💛
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
Aww thanks so much! Good luck on the exam! Let me know how you did! I will be posting a lot more Calculus videos!
@charlierandall3260
@charlierandall3260 10 ай бұрын
Awesome video, I was so confused about the concept of shells, the wristband example makes so much sense!!! Thanks alot
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Thanks Charlierandall! Please kindly subscribe :) You can also find all of my Calculus II videos in this link here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@funwithbrittanyofficial
@funwithbrittanyofficial 11 ай бұрын
Your channel is very under-rated, thank you! You're a great teacher.
@QuocDatPhung
@QuocDatPhung 11 ай бұрын
Thank you Brittany! Please kindly subscribe! You can find all of my Calculus videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@sgf7647
@sgf7647 8 ай бұрын
Thank you for the refresher, my brain shuts down when I have to draw the region of a solid.
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
You're very welcome! You can find all of my Calculus II videos in the following playlist (don't forget to share and kindly subscribe!): kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@makaylaluman1748
@makaylaluman1748 Жыл бұрын
I love your iconic purple background and editing skills. Your videos are very aesthetically pleasing and your speech speed is perfect to absorb the information. I’m so glad passionate creators like you exist and I hope us viewers support you enough to keep going! Much
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you so much!! Please kindly subscribe and share! Also, you can find the rest of my Calculus II videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@MatthewsT-f6f
@MatthewsT-f6f 10 ай бұрын
Thank you so much bro I had a really hard time understanding in class and the illustrations made it so much easier!
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
You're very welcome! I have other Calculus II videos too! You can find all of my Calculus II videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@account-iq7xd
@account-iq7xd 2 жыл бұрын
Best explanation of all the videos I’ve seen :3
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you so much! If you liked it, please kindly subscribe and share with your classmates! It means a lot!
@Trynnagetmydegree__
@Trynnagetmydegree__ Жыл бұрын
Thank you dude! I was over here wondering what their differences was. This helped a lot!
@QuocDatPhung
@QuocDatPhung Жыл бұрын
You're welcome Trynnagetmydegree! If you like my Calculus II videos, you can find all of them here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@robinbardakci9511
@robinbardakci9511 2 жыл бұрын
bro ur my superhero. I had trouble understanding the differences, but you made it much simpler for me to do so. THANK YOU!!!!!!!!!!!!!!!!!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thanks Robin! I'm glad it helped! Please do hit the subscribe button and share to help your classmates too! As well, you can find all of my Calculus videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@uchennaakanno7918
@uchennaakanno7918 2 жыл бұрын
Bro, thank you so much for this video! This has helped me a ton! You are a real one! Please keep putting out great content like this!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Uchenna! Please don't forget to subscribe and share with your friends who are taking Cal 2! I'll definitely keep working hard on these :)
@michelle72albright
@michelle72albright 8 ай бұрын
Unbelievably helpful understanding the reason why makes math sooo much easier! Thank you
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
You're very welcome Michelle!! I'm glad you enjoyed my video! I would really appreciate if you could share with your classmates or kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@gwenm294
@gwenm294 Жыл бұрын
I love the illustrations that you use to accompany the explanation! Youre so enthusiastic it even makes me happy to learn calculus. Thanks for helping me pass my calculus unit for engineering :)
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you for your kind words Gwenm! If you're still taking Calculus 2, you can find all of my videos for that course here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@hidro.nthn_
@hidro.nthn_ Жыл бұрын
Glad to see your video sir. Greeting from Vietnam !!
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you so much Thuận! Let me know if you'd like me to make a video on a particular topic. I also make coding videos. As well, you can find the rest of my Calculus videos in this playlist below (and please kindly subscribe and share with classmates :) kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@aryannamonroe3293
@aryannamonroe3293 2 ай бұрын
Thank you so much, this is helping me understand it much better just in time for my exam too!!
@QuocDatPhung
@QuocDatPhung 2 ай бұрын
Thank you Aryanna! I'm glad you like my explanation! If you know anyone who needs help with this class, kindly share it with them and also subscribe to support me (it means a lot) ~ you can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@yash1152
@yash1152 2 жыл бұрын
5:46 thats a nice welcome change from the traditional black background, or the often papyrous background used in many other vids
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thanks Yash! If you enjoyed my clip and want to buy me coffee, please do hit that subscribe button and share with classmates. As well, you can find the rest of my Calculus videos in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@sarabertini6324
@sarabertini6324 Жыл бұрын
Thank you so much, I hope I pass my calc test today
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thanks so much Sara! I hope you did well on your test! Also, I'd really appreciate it if you could subscribe and share with your classmates! You can find all of my Calculus videos in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@sarabertini6324
@sarabertini6324 Жыл бұрын
@@QuocDatPhung Absolutely! Thanks so much for the video, I'm not sure what I got on the test yet but hopefully a good score!
@subornaakter8309
@subornaakter8309 5 ай бұрын
Finally I got the concept after struggling several times
@QuocDatPhung
@QuocDatPhung 5 ай бұрын
Thanks Subornaakter! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@selenaz6795
@selenaz6795 2 жыл бұрын
respect. u cant use disc method and u even see that its bc y(2) is a zero . omg lol made me smile
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Haha thank you so much Cynthia! I hope you would kindly support me by subscribing and sharing with your classmates. I really appreciate your support!
@DoctrinaMathVideos
@DoctrinaMathVideos 2 жыл бұрын
Understanding the orientation of the element piece is important for setting up these integrals. For the disk/washer method the element piece must be perpendicular to the axis of revolution. For the shell method the element piece must be parallel to the axis of revolution. If the element piece is vertical then the integral must be in terms of x. If the element piece is horizontal then the integral must in terms of y. As for as which technique is better to use that really depends on the functions given. I would include the element pieces in the diagram and label the differentials, overall good video.
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Doctrina!
@gone3394
@gone3394 Жыл бұрын
What is an element piece?
@DoctrinaMathVideos
@DoctrinaMathVideos Жыл бұрын
​@@gone3394 The element piece sometimes referred to as the "representative" piece (vertical or horizontal depending on the axis of revolution) that when rotated around the given axis of revolution produces a disk. The concept is that when we take the sum of these disks it gives us an approximate volume. If we want the exact volume then we take the limit of the sum as the number of elements increase. The key to setting up these volume problems is understanding the dynamics of the element piece which I introduce in my calculus 1 course since the element piece plays an important role in finding the area underneath the curve as well.
@cjmatzen3941
@cjmatzen3941 2 жыл бұрын
Thanks so much for making this! It really helped me understand the topic better.
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Hey CJ! I'm so glad it helped! If you find my videos helpful, don't forget to subscribe and share with your fellow classmates to help them learn too!
@tinale7006
@tinale7006 3 жыл бұрын
Thank you, Quoc
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
My pleasure :)
@danilsonadelino2091
@danilsonadelino2091 5 ай бұрын
What an amazing explainer, loved it
@QuocDatPhung
@QuocDatPhung 5 ай бұрын
Thanks DanilsonAdelino! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@cameronlattea9099
@cameronlattea9099 3 жыл бұрын
Very helpful and insightful, thanks
@QuocDatPhung
@QuocDatPhung 3 жыл бұрын
Thanks so much!
@gravygod9820
@gravygod9820 2 жыл бұрын
Awesome video, super clear explanation! Thank you sm, please keep making more calc 2 videos!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Sure thing Gravy! I'm glad you enjoy my content! Please don't forget to subscribe and share with your classmates :D
@diptikuvarbasolanki2152
@diptikuvarbasolanki2152 Жыл бұрын
Thank you:) Really appreciative work :)
@QuocDatPhung
@QuocDatPhung Жыл бұрын
It's my pleasure! You can find all of my Calculus 2 videos in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@price4123
@price4123 2 жыл бұрын
Finally makes sense. Thank you so much!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
I'm really glad it helped Price! Could you share with your classmates to teach them this trick too? Please also subscribe. Thanks for watching!
@user-bh9rw8ij8v
@user-bh9rw8ij8v Жыл бұрын
Great work! tysm. u are teaching me what my professor should have taught me haha
@QuocDatPhung
@QuocDatPhung Жыл бұрын
I'm happy to help! :)
@ПавелПауновски-м6й
@ПавелПауновски-м6й 2 жыл бұрын
Such a great video! Thanks!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you so much Павел Пауновски! I hope you enjoyed the video, share with your classmates, and subscribe so I could make more tutorials in the future. I'd really appreciate it!
@flowting5163
@flowting5163 Жыл бұрын
subscribed. This video just helped me a ton.
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you so much Tony! It means a lot! Please don't forget to share with your classmates to help them too! You can also find the rest of my Calculus videos in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@arnavmishra6727
@arnavmishra6727 9 ай бұрын
Quoc Dat Phung is a GODD
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
Thanks so much Arnavmishra! You can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
If your classmates need help with this subject, don't forget to share with your classmates too! I hope it will help them as well!
@bayybars
@bayybars 10 ай бұрын
Thank you! You're great at explaining this
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Thank you Bayybars! Since you like this video, you can find all of my Calculus II videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@agyadzied5930
@agyadzied5930 2 жыл бұрын
Great work!!
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Agyad! Please don't forget to subscribe and share with your classmates! I hope this will help them too!
@MichaelGifford-Boyer
@MichaelGifford-Boyer 6 ай бұрын
Great video! Very helpful.
@QuocDatPhung
@QuocDatPhung 5 ай бұрын
Thank you! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@حسنالكعبي-ق7ف
@حسنالكعبي-ق7ف 2 жыл бұрын
Thank you for your help 🌷
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Glad to help! Please subscribe if you found my video helpful! And share with your classmates too!
@daniillitvinenko4348
@daniillitvinenko4348 9 ай бұрын
ahh the dishwasher method hope you don't mind the joke :) thank you for this content, just the refresher I needed.
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
Haha not at all! I'm glad you enjoyed it! You can find all of my Calculus II videos in this playlist (don't forget to share and kindly subscribe!): kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@jacobotou477
@jacobotou477 2 жыл бұрын
Greatest of all times yo so if its a cucumber use a disk if it looks like lady lumps cover them with shells....
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
lol that's right. If you like my tutorial Jacob don't forget to subscribe! And share with your friends! Means a ton TY.
@mariaalejandragaubeca2501
@mariaalejandragaubeca2501 2 жыл бұрын
you are the real g
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Maria! Please subscribe to support me :)))))
@academicstuff548
@academicstuff548 Жыл бұрын
Outstanding video.
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you! Please subscribe and share!
@BerilCankaya-s4r
@BerilCankaya-s4r 22 күн бұрын
aga sen nesinnnnnnnnn adamsin adammm
@QuocDatPhung
@QuocDatPhung 21 күн бұрын
Thanks Beril! I'm glad you like my explanation! If you know anyone who needs help with this class, please kindly share with them and also subscribe to support me (it means a lot) ~ you can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@erenarikan_
@erenarikan_ 11 күн бұрын
Harbi
@erenarikan_
@erenarikan_ 11 күн бұрын
Kral adammis
@AJ-et3vf
@AJ-et3vf 10 ай бұрын
Great video sir. Thank you very much!
@KwabenaOpoku-rz8sd
@KwabenaOpoku-rz8sd 8 ай бұрын
Thank you!! I have Mat 1322 (Calc 2) Final next week im just reviewing. Any tips ?
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
Hi KwabenaOpoku! Good luck on exam! I recommend doing the past year exams and also go over any topics that you need more practice: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@AhmedReda-jr4od
@AhmedReda-jr4od 2 жыл бұрын
thank you ❤❤
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Hi Ahmed! I'm glad to that the video helped! I'm hoping you would subscribe and share with your classmates. It means a ton!
@mafadiphillemon6252
@mafadiphillemon6252 8 ай бұрын
You are good teacher😅
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
Thank you Mafadiphillemon! I'm glad you enjoyed my video! I would really appreciate if you could share with your classmates or kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@michaelpedraza6820
@michaelpedraza6820 Жыл бұрын
For shell problems, will r(x) always = x?
@QuocDatPhung
@QuocDatPhung Жыл бұрын
No it will not. It depends on the situation. I made more examples here in this playlist kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@michaelpedraza6820
@michaelpedraza6820 Жыл бұрын
Thanks!
@somethingwine
@somethingwine 8 ай бұрын
Your smile makes me feel as if math was quite easy.
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
Thank you SomethingWine! I'm glad you enjoyed my video! I would really appreciate if you could share with your classmates or kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@somethingwine
@somethingwine 8 ай бұрын
@@QuocDatPhung Thank you!! Yes I have subscribed and I look forward to your future content!!!!
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
@@somethingwine Thank you so much! It means a lot!!!!!
@roro-zw4me
@roro-zw4me 5 ай бұрын
wow amazing! your follower from Iraq.
@QuocDatPhung
@QuocDatPhung 5 ай бұрын
Thank you Roro! Please don't forget to share with your classmates and kindly subscribe ~ you can find all of my Calculus II videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@rollinginthedeep6900
@rollinginthedeep6900 10 ай бұрын
Absolute legend thank you
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Thanks so much RollingInTheDeep! I have an entire playlist for Calculus II; I hope it'd help you: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@SodiumOverdose
@SodiumOverdose 10 ай бұрын
thank u goat this was so helpful
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Thanks so much SodiumOverdose! I hope you would kindly subscribe hehe :) Since this video helped you, you can find all of my Calculus II videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@LilJollyJoker
@LilJollyJoker Ай бұрын
Thank You!
@QuocDatPhung
@QuocDatPhung Ай бұрын
You're welcome Lil Jolly! I'm really glad you like my explanation! If you know anyone who needs help with this class, please kindly share with them and also subscribe to support me (it means a lot) ~ you can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@JohnSmith-yv5bn
@JohnSmith-yv5bn Жыл бұрын
Can we use Cylindrical Shell method on the first example, y=x^3 ? I tried it, getting 64/5 pi, which is a different from the Disk Washer answer.
@QuocDatPhung
@QuocDatPhung Жыл бұрын
For the first example, you need to use the Dish Washer method. If the shape looks like a cucumber cut in half, you must use the dish washer method. If the shape looks like "two hills next to each other", you need to use the cylindrical shell method. Hope this helps!
@JohnSmith-yv5bn
@JohnSmith-yv5bn Жыл бұрын
@@QuocDatPhung Thanks for the reply! Seems like they use the Cylindrical Shell method for same function here: kzbin.info/www/bejne/p4GWq4agpMahhsU (only x=3 instead of 2 as in your example)
@JohnSmith-yv5bn
@JohnSmith-yv5bn Жыл бұрын
I think I got it: in your example the area of the shape bounded by x=0 and y=x^3 ("inside" shape). In the video it is between y=x^3 and x=3 ("outside" shape). Now everything adds up.
@QuocDatPhung
@QuocDatPhung Жыл бұрын
@@JohnSmith-yv5bn I'm glad everything adds up! You can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@IshanDani
@IshanDani 10 ай бұрын
for both these methods, do we always have to rotate from the y-axis?
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Not necessarily. This is an introduction to these two methods. If you want to see rotations in the x-axis, you can see find it in my Calculus playlist here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@HussainAli-hn2ef
@HussainAli-hn2ef 2 жыл бұрын
thanks man
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
My pleasure Hussain! Please share with your classmates to help them understand this concept and subscribe!
@MDRAHMAN-sv6pc
@MDRAHMAN-sv6pc 8 ай бұрын
thank you so much for your help🙏
@QuocDatPhung
@QuocDatPhung 8 ай бұрын
You're very welcome! Please don't forget to share and kindly subscribe to support me! You can find all of my Calculus II videos in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@blitzkrieg1941
@blitzkrieg1941 Жыл бұрын
You are a god! Thank you!
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Thank you for your kind words Blitzkreig! Don't forget to subscribe and share with others! You can also find the rest of my Calculus videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@blitzkrieg1941
@blitzkrieg1941 Жыл бұрын
@@QuocDatPhung Thank you king! I am in disbelief you don't have more subscribers! I will be here when you celebrate 1 Million Subs!
@QuocDatPhung
@QuocDatPhung Жыл бұрын
@@blitzkrieg1941 Yay, thank you!
@murtez22
@murtez22 10 ай бұрын
Wow what programs are using for explanations
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
I use Sketchbook for drawing the diagrams/writing. I use OBS for filming the current screen as well as me in the background. I use ShotCut for editing :) I hope that helps! Please kindly do subscribe if you enjoyed! You can also find all of my Calculus 2 videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@zacklawrence3651
@zacklawrence3651 10 күн бұрын
thanks quoc!
@QuocDatPhung
@QuocDatPhung 9 күн бұрын
You're welcome Zack! I'm really glad you like my explanation! If you know anyone who needs help with this class, please kindly share with them and also subscribe to support me (it means a lot) ~ you can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@asphyszn
@asphyszn Жыл бұрын
is the radius of a cylinderical shell being equal to x universal for all equations?
@QuocDatPhung
@QuocDatPhung Жыл бұрын
No. The video clarifies when to use cylindrical or disk washer method. But I have videos with solving more cylindrical shell problems, which you can find here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@brandonfarinha347
@brandonfarinha347 2 жыл бұрын
thank you
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thanks Brandon! If you want to buy me coffee, please don't forget to subscribe and share with your classmate! I hope this will help them too :))
@lauraward6443
@lauraward6443 10 ай бұрын
Can you help with these problems 2 and 3
@faisalmohamed4595
@faisalmohamed4595 Жыл бұрын
Brother please you will save me from this confusion so please help me , when you say like y=x2/3 or y= x^2 or any number , sometimes you draw the graph toward right side sometimes up side sometimes left how can i know when its up or left or right I am really confused if i can only understand this i will succeed
@QuocDatPhung
@QuocDatPhung Жыл бұрын
I covered that problem in this playlist (just scroll down a bit): kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@faisalmohamed4595
@faisalmohamed4595 Жыл бұрын
@@QuocDatPhung do you have Instagram or Twitter so i can talk to you? 🙏 I have final exam after 2 weeks and I need your help with some more questions
@nic4090
@nic4090 9 ай бұрын
How come we use dy for the first one, but for the second, we use dx?
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
In the first example, we're adding all the disks along the y axis. That's why we use dy. The second example we're adding all the disks along the x axis. That's why we use dx. Please look at the diagrams. Let me know if this makes sense!
@nic4090
@nic4090 9 ай бұрын
lol you fast.
@nic4090
@nic4090 9 ай бұрын
So, for problem number 2, when we rotate it around the y-axis, does it naturally create that cylinder shape due to that a gap? I'm just wondering where it come from. sry if my questions are kinda weird, but whenever I think we are rotating around the y-axis or x-axis, I automatically think dy or dx
@missionimpossible5657
@missionimpossible5657 9 ай бұрын
Nice smile😄
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
Thanks a lot! You can find all of my Calculus II videos here: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@7uplusprite
@7uplusprite Жыл бұрын
Can you just do an upside down cucumber x 2 ?
@QuocDatPhung
@QuocDatPhung Жыл бұрын
From first thoughts the process should be the same. E.g the shape goes from -2 to 0 on the y axis. So -2 is at the bottom of the integral sign and 0 should be at the top of the integral sign.
@williambradford3469
@williambradford3469 Ай бұрын
the dishwasher method
@RofhiwaMatshete
@RofhiwaMatshete 2 ай бұрын
My friends are arguing about where you come from. Are you Canadian or Chinese?
@QuocDatPhung
@QuocDatPhung 2 ай бұрын
I'm Vietnamese Canadian! You guys can find all of my Calculus 2 videos in this link: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@lauraward6443
@lauraward6443 10 ай бұрын
Y = tan^2(x) , y=1/2 sec^2(x) and x= 0 Rotate x axis Rotate y axis Rotate x=-1 Rotate y=-1
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
These two videos will help you: 1) kzbin.info/www/bejne/apvHi3-insd-sNE 2) kzbin.info/www/bejne/e2e8mWOooc5pmtE
@lauraward6443
@lauraward6443 10 ай бұрын
Can you help me with homework Do you do private tutor
@QuocDatPhung
@QuocDatPhung 10 ай бұрын
Hi Laura, I don't do private tutoring because everything I want to teach is already in the videos. Let me know what specific problems you need help with and I can provide you with that video (all of my Calculus II videos are in this playlist: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@lauraward6443
@lauraward6443 10 ай бұрын
Here is my homework Y=x^3 , y=4, x=2 Rotate x axis Rotate y axis Rotate x=3 Rotate y=8 Thank you so much
@kin_1997
@kin_1997 2 жыл бұрын
i love you
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Khalid! Please kindly subscribe if you really do love my content haha :) it means a lot, and please share with your classmates to help them as well!
@bachtri2466
@bachtri2466 9 ай бұрын
anh là người việt nam hả
@QuocDatPhung
@QuocDatPhung 9 ай бұрын
Ừm đúng rồi bạn! Bạn có thể tìm các clip của mình về Calculus II trong link này: kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@loganduong5056
@loganduong5056 Жыл бұрын
Tr oi em cam onnnnnn
@QuocDatPhung
@QuocDatPhung Жыл бұрын
Ko co gi ban hihi
@anilkumarsharma8901
@anilkumarsharma8901 Жыл бұрын
In India🇮🇳 this method is used by even illiterate person also⌚ from🌊 millions of years ago
@QuocDatPhung
@QuocDatPhung Жыл бұрын
That's interesting! Thanks for sharing Anil! You can find all of my Calculus playlist here (and don't forget to subscribe too!) kzbin.info/aero/PLeTO6OT3-FKmuCeO97iKt_Aibx-a938JA
@anilkumarsharma8901
@anilkumarsharma8901 Жыл бұрын
@@QuocDatPhung kumbh kaar doing this when they were making earthen pot Point📍 Potential Pot Potter Pottery Port Property Picture🖼️ Pictorial Pike Peculiar Peculiarly Para Parmaanu parampara parameters paramedics parents
@sing759
@sing759 2 жыл бұрын
thank you so much
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
Thank you Wilhelm! If you found it helpful, please kindly subscribe :) And share with your classmates to help them too!
@sing759
@sing759 2 жыл бұрын
@@QuocDatPhung already did :) very helpful indeed
@QuocDatPhung
@QuocDatPhung 2 жыл бұрын
@@sing759 Thanks Wilhelm! It means a lot :))
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