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

[@dmoreno5555]

thank you...amazing explanation and pictures (:

[@janedoefree13]

This was amazingly helpful!

[@thegammerman]

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

[@janedoefree13]

Yes. I now have a BS in Applied Mathematics.

[@greta7885]

Great pictures! Thanks 😊

[@hershalrooplall5068]

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

[@jp9523]

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

[@TheNirto]

Thank you so much this helped clear up so much

[@donasaju244]

what happens when axis of rotation is x= -2

[@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

[@nathanquenn7095]

Thank you so much

[@knightsoftheroundpeople2676]

Thank you I completely understand this now

[@levisim997]

Thanks !!

[@muhdkhairulamirinum3985]

thank you Sir

[@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?

[@user-amanfeildconvecture]

Thanku guru

[@EzzedineAli2ndSH]

thankkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk yyoouuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

[@jake13b]

visualizing the actual washer and what it would look like is NOT as important as knowing how to actually come up with the full equation with bounds. the real learning of this video doesnt start until 3:16.

[@ryanlyle9201]

These sketches are almost better than the explanations, wow

[@dulara5448]

kzbin.info/www/bejne/gnzdoaqVfbp-hLM Part 2

[@Poopything1]

All of this business!!

[@syedhussain2151]

700th Like 🌹

[@yousufabrar3031]

y didnot we do fuction minus 4??

[@yousufabrar3031]

i got it sorry

[@ZaidSalaria]

Who else heard the fly

[@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