Algebra 2 - Conic Sections - Parabolas

[@Soramix2]

Just wow...literally everyone would be math geniuses if all teachers were like you...

[@samsinchester4933]

it's 2016. dude, you have no idea how grateful i am for this channel

[@samrodriguez4692]

Sam Sinchester 2017 and same... also hello fellow San

[@katesanchez1738]

hello from 2018

[@supercoolmunkee]

Hello from the future. Your comment is now 6 months old. Did you pass your math class?

[@makaylabosma128]

sup guys I'm here two days before 2019

[@IvyANguyen]

Hi from 2019 April 14!

[@ellenjayne5573]

You're 20 times better than my current pre-calculus teacher and we're learning the same exact thing. "They're generally called H, K but I'm just going to use numbers." EXACTLY why complicate things when you don't need to?! Thanks so much!

[@lovelylim4453]

Thank you so much! I have a test tomorrow, and was so confused about this chapter especially parabolas. I have a better understanding now (:

[@seanwalker4868]

You've really done a great job of explaining conic section concepts - kudos. Note, your original drawing of the conic shape that conic sections are created from was correct. The base conic shape is basically the lines y=x and y=-x rotated 180 degrees, not two parabolic shapes as you redrew. In other words, if you had a plane intersecting the line of symmetry through the two cones (basically standing vertical through the center) you would have two perpendicular lines.

[@laynevictoria7]

Mr. Ahdoot, you are such a friendly, caring person who makes every person feel important. That is a priceless trait that I know takes time and effort. Keep up the amazing service :)

[@michaelmpanugo4055]

Great job at teaching me this!! I feel like I have a personal tutor, even though I'm broke and at home!:)

[@tajiahgallegos6375]

dude.. im crying. I've been so stressed lately in algebra 2 and this is finally a break through for me. I get math. YAYMATH

[@christen2254]

I have been using yay math since 8th grade and I’m graduating this year. Best teacher award goes to you.

[@ChoKyuhyunNemo]

I was getting a C in math before because the page explaining how to get to my answer was full of numbers, half of which were not important, and very difficult to understand. I go to an online school I couldnt just go in to a teacher when I needed the help. Thanks to you, I have gotten 100% on all of my conic equation lessons so far, including the test!

[@thanduxolocyril2676]

yaymath, I would recommend this channel to everyone who does conic sections

[@DGregster]

I wish you were my math teacher. Your great at making math interesting and easy to understand. I've always hated math, and even though I'm fast at learning it, I have always had trouble in Algebra and Algebra 2.

[@bigaperez12]

You have so much patience lol, thank you for the video.

[@chrisd9458]

It's 2021 and Im still watching your videos! Thank you!

[@jademade66]

Only reason im passing alg 2 this year

[@welovesjforever]

I had to study in INDIVISUAL about conic section and I was really, really crying by searching on internet, but this video really saved my life. YOU ARE MY SAVIOUR tanks :D

[@SuvrathHegde]

The concept of parabola you are teaching out there is totally different from what we are taught in India. Here the general equation of parabola is y^2=4ax and general parabola is drawn sideways with vertex along (x,0).

[@SuvrathHegde]

+Abhishek Akkapalli Haha, 10 months ago, I had minimal awareness about maths. Learnt a lot and when I look at the comment after such a long time, I feel how stupid I was while writing the comment.

[@SOURPOWER888]

ur the best man. ur saving my life in math class since middle school.

[@savouredsolitude2127]

we need more teachers like him

[@crisgiray]

The distance from vertex to focus is the number we multiply to 4 to find the value of (a or 4a) from first example it should be 8 instead of 1/8, and from second example -2 instead of -1/2.

[@susancarberry1761]

You are very naturally funny. I like how you just so happened to know the last few lines to that song in the movie Big. I enjoy learning from your videos, because I get to laugh while I learn. Your videos have helped me so much with my internet precalculus class. Thank you for all you do.

[@yaymath]

Susan Carberry what an honor, thank you so much, Susan

[@AnaHernandez-ij5wy]

I literally can't appreciate u any much, I wish all instructors took the students success seriously like u because in some colleges the instructors SUCK and I feel like going without the formula is much better since they don't let us see it anyway and it's too much to remember

[@rubywcw]

He is a great teacher!

[@dsakjet78]

You can think of the directrix as a straight line opposite of the focus.For example,if your focus was (1,p) the y-value(a constant straight line at a y-vale with no slope)would be negative p.

[@bachirblackers7299]

Thanks much but i think you was right when draw cones with two cross lines . And then something went wrong when curved them . And one of the students mentioned a triangle !?!?! We should consider the infinity of cone upward and downward Of course we love your beautiful courses

[@alanklein3592]

Sir, you are an inspiration to teachers.

[@mckhenziempenyana253]

I MISSED IT LAST SEMESTER...BUT SINCE THIS IS HELPFUL, I THINK AM GONNA CONQUERE THE UPCOMING TEST...#HELPFUL

[@jonathanandrews2900]

I'm really confused on the online quiz on how to change the equations they give us to the one's that you gave us in the video!!!

[@brianjamespertacorta5785]

he's student's are so lucky

[@evan.5967]

Brianjames Pertacorta Hmmm

[@sightingsara]

"YayMath" saving my grades since last year! :D

[@KoiEntertainment99]

BEST TEACHER EVER, KEEP UP!

[@megamanx2006]

So, I assume the directrix formula is: y-d, where y is the second value (y) of the two in the vertex and focal lenght d=1/4a. I the last sample, y=4 - (-1/2) =>9/2= 4.5 Easy and quick, directrix = y-d

[@OmondiZackTheMentor]

At long last av known the meaning of LATUS RECTUM which av never heard an idea about. Thanks very much Teacher yaymath .

[@GuitarHeroPhenomSux]

Is the guy at the beginning singing to the tune "Hocus Pocus" by Focus?

[@irishdane346]

okay so whos watchin on March 2017?? thanks sir, when i receive my test paper tom ill scream YAYMATH!

[@trinifromthelakes]

what school does this guy teach in?? I want to transfer to his class 👌👍😂

[@rachelbara86]

Sammmmmmmmeeeeee

[@schnauzerlover19]

Directrix?

[@amalsaigal5372]

its 2022 and these videos saved my grades in math. thank u sm.

[@dankdew212]

Thank you so much for posting these videos.

[@sawadeeka1]

Thank you very very much!! This is so helpful

[@DopeReggae]

Yo big up to this teacha, I got exam tomorrow and his video made it easy fo me! 👌🙌

[@twadhwaa]

You're such a great teacher!

[@daniyalko5154]

hi yaymath im 12 im trying to understand how to find a parabola for my science fair regionals. Im was trying to understand how to find the focal point of the parabola. I don't entirely understand how u got 1/8 or why in the parenthesis (x-3) -3 became positive 3 when making it a vertex. can u help me out here?

[@michaelobrien596]

Your are too good at teaching :)

[@Funnyhahavideo351]

this helped a lot thank you

[@rashaadpendleton4841]

Is the latus rectum thing the same thing as an asymptote?

[@filimonmphilipus7345]

Can you deliver the general equations of parabola using trigonometry??

[@Swagaito_Gai]

How did you get 1/8 for your a-value at 7:24 in the video?

[@samesmas9073]

Wish i had a teacher like this

[@cindyodair1026]

This is very helpful! Thankyou Thankyou Thankyou!

[@HussainAbdullahTofa]

Wow sir. I'm from Bangladesh. Your lecture helped me out lots. 😍

[@markadriansalvatierra3813]

I get it. but what is the standard and general form?

[@ArkGalos]

you are a lot better than my math teacher!

[@redhenryrepeater]

13:56 how did you get 8 by dividing 1 by 1/8???

[@redhenryrepeater]

never mind i got it

[@michaelobrien596]

You do the recriprical of 1/8. It's like multipling 1 and 8.

[@yaymath]

@Snow120910 hey! I'll be doing some traveling this month and would love to try to work it out. If I can't make it to your school physically though, I'm happy to skype with your class! You can be in touch with me about details through my email ([e-mail])

[@preshagen7538]

Great enthusiasm, really Inspiring (no sarcasm) but a conic is not curved. We get a conic by taking two intersecting lines and rotating one line around the other at the intersection. Creating 2 cones.

[@mayankmishra9872]

Very nicely taught

[@boom_stick_boi4893]

This is SOOOOO helpful! Thank you!!

[@ajaykhalkar9157]

really good!! 👍

[@MattTrainorHD]

this dude is a riot lol

[@misterbix3220]

lol i literally just liked as many comments as possible because this video was so helpful...oh and i also like the video too

[@INCREDIBLYDOPESHIT69]

I have a quiz tommorrow thank u so much for the help

[@soulreaperichig0]

thank you yay math bro i think i will pass my exam now

[@belle4443]

sir,u save my life !!!!!!!tomorrow is my exam !!!!!

[@ragnar0721]

Oh no no no, the cone is not curved, When the plane passes through the vertex of the two adjoining cones and parallel to the axis, you get two intersecting lines.

[@typicalatypical7029]

his teaching is insane

[@bots7746]

YAYYYMATH...SOO GONNA ACE MY EXAM

[@armoredtitan2353]

thank you

[@PAWNB3YOND]

You're amazing

[@AnaHernandez-ij5wy]

THANK YOU!!

[@Olaoo99]

Why are these unliste?

[@Mariyjaneman]

I pay for math but learn it on here for my class.. Thanks!!!!

[@ASLTheatre]

Thanks

[@SamHerrera3]

But 1 divided by one half is one half isn't it? How did you get 2?

[@cheryllbacolod5672]

1/(1/2)= 1 x (2/1)= 1 x 2 = 2...

[@ajaykhalkar9157]

keep making videos...😊

[@marielalfonso5083]

Thank you! :))

[@elainewatson9421]

Use a real Cone. Chocolate preferably

[@JaensPiano]

thank you so much ! haha quiz tomorrow ;c

[@RhiSoundsLikeRye]

The intros make me cringe e.o But thank you I've missed tons of school and this is helping me catch up.

[@alfonsoducejo2205]

ty

[@musaratshah6380]

He is a teacher or student?

[@Zachleonard97]

this guy is the man

[@supercoolmunkee]

From Drake and Josh *Josh:* COOOOOOOOOOOooooneeeee *Drake:* Whateveeeer

[@lunarianseas8274]

thanks this very helpful in my midterm exam

[@nono-hmd-9982]

Ken Mendoza just liked because of ur profile pic😍😍 do u like detective conan

[@YouhanY]

x=-(y-2)^2 help me on this please

[@chaitradaggubati5799]

this guy makes MATH easy!!! Is he from earth??!?!? LOL

[@bearsuitClan]

"lateral opening"... wow.. random guess or does she know latin

[@aratrikachaudhuri7775]

IS focus the mid point?

[@shoukatavakolian9362]

no

[@crisgiray]

PLEASE CHECK THIS VIDEO THERE IS SOMETHING WRONG WITH HIS EXPLANATION., (CORRECT ME IF I'M WRONG) THANKS

[@Kurtlane]

THEY ARE NOT CURVED!!! THEY ARE STRAIGHT!!! I am sorry, but this is simply wrong. They are cones, they are not curved, and cutting them with a vertical plane through the middle would create two triangles. Students are right. The teacher is wrong. And, from this comes the EXACT definition of parabola. Parabola happens when the cutting plane is parallel to the edge of the cone.

[@godoasis5264]

wow

[@jimkeller3868]

Cones are not bowed or curved.

[@fredinelgolosino4381]

it is not cone itself. it is all about the sections. when you cut cones in any part you can make 4 , parabolas, hyperbolas, circles,ellipses. Thank youy

[@SamHerrera3]

Can you help me out here. Why did he say in the video 1 divided by 1 half is 2 ? I put it in a calculator and I get one half. At 11:52

[@amateruss]

it's just 1 x 2/1 just reverse the numbers in the denominator then multiply them into the numerator if you are dividing with fractions.

[@buddylove222ful]

lateral opening!!!!! 😂😂😂😂😂😂😂😂

[@alanklein3592]

I'm pretty sure that he just realised that he hadn't added 1/8 when originally writing the equation and added it in at 7:24 so that he could use it later. There was no process.

[@andreypj3619]

2017 😭🙏🏼

[@mysticnug7023]

im doing this in geomatry

[@9000fail]

Tyler Andrews lmao geomatryxD

[@drumachine96]

haha this guy kinda looks like Paul Bissonnette

[@SudarshanSaxenatherockstar]

Man...!!! u did't said a single word about eccentricity... from where the basic definition come... how come u can expect other people to understand from where that focus came and why shape of parabola is like that... hope u get me..

[@amal12goalkeeper]

Thank you. Honestly! my teacher can barely speak english... :/

[@SuperOriginalGuy]

Gosh, if it wasn't for you I would be failing, my teacher is miserable and talks to us like we're professors from Harvard...