Graphing Logarithmic Functions with Transformations 3 Examples

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thank you for making this relatable - actually understandable, and not just telling us to "remember how to"

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you explained how to do this better in 20 minutes than my professor did in 2 1/2 hours

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[@joshprabahar404]

You break down the logarithmic function so simply. Very easy to understand and it helped a lot. I was even able to do the last practice question you gave in the video. THANKS A LOT!

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What a gem this man is the only reason I know what I'm doing when it comes to logs

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Amazing. Learned more here than in class

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I was literally falling asleep trying to figure out my homework, then I clicked on this. BAM! Thanks for waking me up!

[@profrobbob]

Now Closed Captioned

[@georgesadler7830]

Professor RobBob, thank you for another awesome lecture/videos on Graphing Logarithmic Functions with Transformations. Graphing Logarithmic Function by hand is the best way to fully understand this material. Students should also recognize the pattern of all Logarithmic and Exponential Graphs. Professor, you have x equal to negative 4, this is an error, x should not equal to negative four. X should be greater than negative four.

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thanks for being one of the few helpful pre-cal videos

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+BrucificationGaming you're welcome and thanks for taking the time to study!

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i am a physics major student. we have a short course on graphs... but after watching your videos i now got it cent per cent... thank you so much

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My teacher kind of just glided over this. Thanks for going in-depth.

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This is the first video that I watch from your channel. I loved your video. Thank you.

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Cramming for my Algebra 2 exam.... you're a life saver!

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+Makaira Fisk maybe you'll sub now too:)

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Finally I've found this.Thank you so much it helps a lot!!!!!

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You're welcome...glad I could help! Please help us by taking the time to like, subscribe, share thru social medias, with friends, classmates and especially your teacher to help us keep growing and helping others study! ...and also, so others don't need to search us out like you did:)

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Happened upon this video on pi day 2017, so hearing a happy pi day was funny. Was recommended your channel while studying for my upcoming final and couldn't be more grateful!

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I just got my grade back and got a 90%, higher than any other exam this quarter! Thanks again, I'll definitely share this and be back during Calc!

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I love your shirt! I have an ultimate pi day shirt myself :) Sadly, I was in the middle of the SATs during pi o'clock... And not even a math section! Thanks for the videos :) Math is awesome!!

[@speedspeed121]

As always, your video is the piece that makes me understand the concept.

[@profrobbob]

+Eric Hanaway thanks for your continued support too!

[@Noroimasu9]

Thanks Rob, I appreciate the help! Also, the random sound effects were awesome.

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[@ayushmishra-on2cs]

Thanks sir it helped me a lot!! I'll tell all my friends to watch these videos bcuz they also have problems in logarithms.

[@profrobbob]

+ayush mishra you're welcome and thanks for liking, subbing and sharing my channel with your friends too!

[@ayushmishra-on2cs]

Ur welcome sir! btw how to solve this eq. using logarithms? : 2^x=3^y=6^-z(using log) and if have u told about this kind of sum in ur videos plz tell !!!! we have to find the value of 1/x+1/y+1/z.

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The existence of this man made my life easier .

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@@profrobbob Suree!! Thank you so much, Professor!

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@@ahmedafcershishir990 THANKS...I look forward to all those new subscribers...BAM!!!

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Knock Knock its very easy to solve i re-watched your videos in order way as you posted and arrested the right answer ,,,,you are brilliant professor,,i pay salute for your creative skills and free social online maths course of instruction ,,,BAM

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deserves a sub right now!!!!!!

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ProfRobBob See you then!:)

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HG Gha BAM!!!

[@flaymien_2450]

Thank you. I have a big test coming on exponentials, logs, and logistics and hand graphing was the only thing that wasn't really coming together for me. Also, I love the random accent on some parts.

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You have been a gigantic help. Thank you ever so much :)

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Oh my god. Thank you so much this helped me so much! I finally understand what the hey I'm supposed to be doing in college alg/trig!!! You're amazing.

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Rob, do you have crowd-supported captioning service on?

[@profrobbob]

Michael Pratuch Is that a new KZbin feature for everyone? No. I saw that I could contribute some CC to a select few channels support.google.com/youtube/answer/6054623?hl=en I started CC'ing my most watched lesson in late December and have done between 40-50 videos so far. The auto captions are REAALLLLLY bad for math language.

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I'm figuring out best way for someone to help you out with subtitling since it will increases your views count.

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Thanks Aleksandr Strizhevskiy it was a gift...too bad Pi day of the Century fell on a Saturday:(

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your the reason why I'm passing my class right now thanks

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Hi Mr. Tarou! Thank you for the video!

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You're welcome...thanks for studying and subbing too! Please tell everyone to watch and do the same...BAM!!!

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Absolutely brilliant, thank you for a great lesson. You made my life a lot easier by being able to explain this in a fun way!

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you're a god send. and hilarious. you make me like math. THANKKS

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Thanks for studying and subbing! Please tell all your classmates to watch and do the same:D

[@carlosnava8351]

Excelent explanation, thank you very much

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[@TalestoryJL]

15:50 It's funny that my teacher had some difficulties for explaining why X to the power of 0 is equal to 1, but here it is!

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Secrets of a math teacher...lol I have a screen that pulls down to chalk the grid:) You're welcome...thanks for studying and please share this free channel with your class and teacher too:D

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THANKS again!

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How would you graph f(x)=log4(1/2(1-x)) without a calculator? I always enjoy watching you videos. you should do a video on how to do that problem. Thanks a lot

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BAM!!! INDEED:) Randy Savage Good to see you! Congrats on a job well done, even if you are doing it without much help from me this time:(

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ProfRobBob the second example , in T table you took ''Y'' =6,-3,0,3,6 how about if you take these values 1.2.3 ,0,-1,-2,-3 ?? how to calculate ??

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By using values not divisible by 3 you will have rational exponents... power/root... and since many numbers are not perfect cubes you will need a calculator.

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You saved my life.

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[@brndag]

hi Mr. Tarrou, im having trouble graphing ln functions without calculator... what numbers should i add if i have transformations in the function like f(x)=|x^2-1

[@profrobbob]

+Brenda G Is your sample equation F(x)=|x^2-1|? The sharp bends in an absolute value function are going to occur at x values that make the inside expression equal to zero. Here that is 1 and -1. If you can graph a parabola x^2-1 without a calculator, there is just a vertical shift down of 1, your graph is going to bounce off the x axis since there is no vertical shift in your absolute value function. This absolute value graphing video just has linear functions but you may still find it useful. kzbin.info/www/bejne/j2TIoaqtnpaBd80

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[@samuelpatterson5625]

So just to be clear you have to be in exponential form to graph the function and you have to solve for x?

[@profrobbob]

+Samuel Patterson That is the way I always teach this lesson, yes:)

[@kahlonladhamunda3589]

could you please, transform y=2logbase3^(x-2)-5 into exponential function ,,,,,i did and got 3^y-2 +7=x is it right or wrong Professor Tarrou

[@profrobbob]

Mehak Kahlon I will send you a Google+ message with a solution.

[@leahgrows]

Haha you said 3^ to the -2 when it was +2 ;) but this was a very good video! I have a test tomorrow on everything having to do with logs so it was a great review! Thanks :)

[@profrobbob]

+ThatCrazyRedhead I get so frustrated sometimes when I realize I messed up in a lesson! No one is behind the camera to catch my mistakes like when I am teaching live. Thanks for the kind words. I hope you did great on your test and aced it like BAM!!!

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great vid helped alot

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[@mirajones1295]

It's better to take the transformation into account and use this as the origin. It's a lot easier and faster.

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BAM!! looking good sir and nice topic :)

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THANKS ch0bits best Pi shirt gift ever:) ...and Thanks for stopping by to say Hi!

[@tzmsteve]

Would you mind explaining why x is equal to -4 and not x is greater than -4. The equation never touches x at -4.

[@profrobbob]

Steve Larsen Thank you for pointing that out. I mixed together and equation to start talking about domain and then wrote the equation of the vertical asymptote. I will add an annotation correction!

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mr bean is that you?

[@profrobbob]

no...it's mr BAM!!!

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best guy

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Awesome! Thank you :)

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You legend.

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Not yet...maybe someday when I have a million subscribers...but until then, thanks for watching and sharing this channel so we can continue too grow!

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Pi day in one day :D waiting for 3-14-15 at 9:26am

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And I had the shirt ready Andy Chai :) Thanks for watching!

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Thx 👍🏽

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THANXX A LOOT

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Now I am getting a+

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BAM!!!...that's what I like to hear! After you get that A+ please take the time to like, subscribe and share this channel and your success with your teacher so ALL current and future students who are self motivated like you will know where to find free help:)

[@Mr.G626]

great tutorial, but i still HATE graphing in general, just gonna have to suck it up ha..

[@profrobbob]

+jasonkgreen811 thanks for taking the time to study...don't give up, you'll get it and then you might even feel compelled to shout out BAM!!! ...lol

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hell yeah math is easier with you

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BAM!!! Please spread the word:D

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you look mr. bean my goodness hahaha

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please be my teacher. my school teacher has no idea what she's doing

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just like, subscribe and share this free educational channel with your teacher and classmates...it 's the next best thing!

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yes of course i will suggest this channel as it helped me big time

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i love you

[@profrobbob]

Sub and share please:)

[@matto2971]

When I plug this method into log3 (1+x)+2 it does not work according to my professor or my calculator. It graphs it incorrectly. This fails. I don’t know why but everyone says it does. This means that algebra fails to work here or. Someone has failed to explain what is really happening here. Oh how I hate transformations. It is the approach to math that says.... memorize a bunch of rules that make no intuitive sense and plug them in. Then draw a picture based of memorization without comprehension and then we will test you on a concept that Bender’s a rule that nobody understands and based on the lessons could understand. WHY DOES EVERYONE REFUSE TO TEACH THIS! WHY PLAY HIDE THE BALL!

[@eztech3820]

Is that you Mr.Bean?

[@profrobbob]

No..if I was Mr Bean I wouldn't have to be working this hard...lol

[@eztech3820]

Thank you sir it help me a lot ♥

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YAS

[@judaleetee1094]

I just want you to know that this is extremely helpful. Appreciate it!

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Thanks for liking and learning, we appreciate you viewership and please don't forget to sub, share and support the ads for all the free help you find on youtube!

[@aashsyed1277]

LOG BASE -2 OF -8 IS 3....... THINK ABOUT IT

[@profrobbob]

I see what you are saying, but logs are inverse functions to exponential functions. Exponential functions cannot have a negative base, thus logarithms only have positive bases😄👨‍🏫

[@MrJuanthekilla]

GOD

[@krissydayanagomez]

AWESOME SAUCE

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It will be after you like, sub and start sharing this free educational channel:D