Question

the region by the line y=x/2. teh x axis, and x=2, is rotated around x axis. find the volume of rotation using disk and shell method.. help

Answer 1

HELP YOSELF
http://www.khanacademy.org/math/calculus/v/solid-of-revolution---part-2

Answer 2

please dont be mean

Answer 3

Ok, fine. Try wolfram alpha.

Answer 4

i dont know how to ask the question on that website

Answer 5

My bad, wolfram won't do it. http://www.khanacademy.org/math/calculus/v/solid-of-revolution---part-2 seriously gives you the answer to sqrt x around x axis.

Answer 6

buts its x/2

Answer 7

Ok, my bad again.

Answer 8

Can you give me a moment? I'll try to do it. I'm 15 years old though, so xDD

Answer 9

\[\int\limits_{a}^{b} \pi f(x)^2 dx\] is what you are looking for

Answer 10

i.e, \[\int\limits_{0}^{2}\pi x^2/4\]

Answer 11

the second is what i got

Answer 12

what about using the shell metohd

Answer 13

now, you should get\[(\pi)x^3/12|_{0}^{2}\]

Answer 14

I don't have any idea. I'm learning calc rite now. Try, r/cheatatmathhomework (reddit.com)