Washer method rotating around horizontal line (not x-axis), part 1 | AP Calculus AB | Khan Academy

[@glitchforum]

YES. My teacher did not spend enough time on this. The concept isn't that hard when using the axes, but rotating around anything other that either axis is pretty difficult.

[@glitchforum]

Ended up getting a 90 on the test mostly thanks to this video honestly lol

[@HHHjb_]

im suffering through this rn bc of this same issue of it not being explained nearly thoroughly enough while also stacked ontop of 3 other new concepts

[@aaronasmr8833]

It's unfortunate because if you can't draw or visualize properly with this stuff it throws everything off

[@theabeatriz]

GREAT VISUALIZATIONS

[@jp9523]

Thank youuuuuuuuuu. I now understand it much better, when it's rotating on a non-axis

[@dmoreno5555]

thank you...amazing explanation and pictures (:

[@greta7885]

Great pictures! Thanks 😊

[@janedoefree13]

This was amazingly helpful!

[@thegammerman]

6 years later ...... was it worth it ??!!!!

[@janedoefree13]

Yes. I now have a BS in Applied Mathematics.

[@hershalrooplall5068]

this video really helped me, thanks bro. and your drawings arent that bad...lol

[@donasaju244]

what happens when axis of rotation is x= -2

[@TheNirto]

Thank you so much this helped clear up so much

[@asdfjklasdfjkl4443]

what happens when the axis of rotation in this case y=3 is in the range of both functions? what if it wanted to rotate about y=3?

[@bryanmeot8112]

Zero is the inner radius

[@knightsoftheroundpeople2676]

Thank you I completely understand this now

[@dominiccinotti3108]

Wouldnt the outer radius be 4 + the outer function? Since the function goes under the x axis?

[@zaccletaco8223]

No, since you're finding the area between the two curves, or the difference. So it would be the top curve (y = 4) minus the bottom curve (x^2 - 2x)

[@edmarjosefmendez327]

We have the same idea I thought it would be 4 + (x^2-2x)

[@devtahlan9999]

@@zaccletaco8223 didn't understood pls if u see this comment ..explain ,..i have the same confusion shouldn't it be 4+...that guy?

[@nathanquenn7095]

Thank you so much

[@muhdkhairulamirinum3985]

thank you Sir

[@levisim997]

Thanks !!

[@ryanlyle9201]

These sketches are almost better than the explanations, wow

[@user-amanfeildconvecture]

Thanku guru

[@EzzedineAli2ndSH]

thankkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk yyoouuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

[@dulara5448]

th-cam.com/video/LKzpw_HUKNQ/w-d-xo.html
Part 2

[@Poopything1]

All of this business!!

[@ZaidSalaria]

Who else heard the fly

[@yousufabrar3031]

y didnot we do fuction minus 4??

[@yousufabrar3031]

i got it sorry

[@syedhussain2151]

700th Like 🌹

[@jessepiazza2106]

inerrrrrrrr

[@yukiihiro8368]

Your accidentally changed the sign from negative to positive in the outer radius

[@aaronasmr8833]

Yukii Hiro no he expanded 4-(x^2-2x) to get 4-x^2+2x