Question

Help Pleeeease!

Answer 1

The region bounded by the given curves is rotated about the specified axis. Find the volume V of the resulting solid using the Shells Method.
y = −x^2 + 17x − 72, y = 0; about the y−axis

Answer 2

where are you stuck?

Answer 3

just apply
\[V=\int_8^9 2\pi x f(x) dx\]

Answer 4

Hm.. Well I did it, but got the wrong answer. I dont know where i messed up. Sorry for the messy work.

Answer 5

line 4 , where is your minus sign for x^4?

Answer 6

see it? the line you made them have the same denominator 12

Answer 7

Oh yea i see it.

Answer 8

I still got the answer wrong :/

Answer 9

Nevermind, I made some silly calculation errors. xD
Thanks! I got the answer. :)