Disc method around x-axis | Applications of definite integrals | AP Calculus AB | Khan Academy
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- Опубликовано: 21 авг 2024
- Finding the solid of revolution (constructed by revolving around the x-axis) using the disc method. Created by Sal Khan.
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We are contstructing a quarter at each x in our interval. The sum is the sum of all the "quarters" (each with depth dx).
nice
>cramming for ap calc test tomorrow
>1.5 speed
here we go xD
right there with you.
1 year later. doing the same thing
Here we go again boys
same bro 1.5x speed is perfect lol
Keeping up the tradition ...exam in 7 hours
I love how he teaches. Really wish more teachers and textbooks would be as effective as he is.
I think it's just the different way he teaches. I bet if I had him as an instructor, I'd find someone who could explain some things better for me.
What program is he using? Sal is a good drawer.
I know I'm 5 years late, but whatever. He's using SmoothDraw
I thought he was a cabinet
Thank you so much Sal, the formula makes so much sense now.
love you khan academy
There isn´t any good explanations in Swedish when you study math. Good for me is someones like you. :)
It looks like a Hershey's Kiss
You help so many people. From the bottom of my heart, Thank you!!!
A lot simpler than I expected
This is new to me. I think it's amazing.
I would not be able to pass my calculus classes if it wasn't for you, thank you so much.
Thank you it is clear now..
I understand what disks are now! 😄
You make everything so much easier to understand thank youu
Thanks it helps a lot!
thank you
So much better than my teacher...Thanks.
I have been trying to understanding this for few days now, thank you very much mr Khan for making this crystal clear
Beautiful illustrations
thank you so much
Perfect explanation! Thank you so much!
Thank you khan academy you saved me and I PASSED CALCULUS TODAY!
Thank you for the great visualization
Thanks!
Very clear, thank you!
OMG. Thank you so much
"stretch our power of visualisation"
amazingly amazing 😄😄
Thanks so much! Finally understand this.
Thank u
Great! job Sal and Khan Academy
very good!
Wow sals good at drawing
lovely
wizard hat
Sal still the goat 🐐 8 years later
me trying to cram for my last ever calc grade tomorrow. I barely have a C rn. :(
"...it looks like a little bit of a kind of a weird hat." - S. Khan
Amazing
please do a video on ricci flow. please :)
It is not true coin right? because radius changes when you move on x axes ....?
what if you have multiple y = functions
Phil V that's the washer method
How would you do this if the region crossed over the axis of rotation?
when you got to the standard derivative stuff, I was like...what kind of witchery is this ?!?
Something i definitely need to look up
Now I know why the name of the method is disk
wait, I thought dx doesnt represent delta x?
Man this stuff is easy
I was just wondering why these new videos are not in a playlist :/
I'm using software to download the videos in one go, it'd be more comfortable if they were placed in a playlist
I must be clear. It is a wizard's hat. Not just any wizard's hat but Gandalf the Grey's hat.
why r=x^2 ??
oh okay okay, understood, f(x)=x^2 thats why,
literally the same prob Im doing lmao ftw
wait, I thought dx doesnt represent delta x?
it does