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student93
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Homework Statement
Find the volume obtained by rotating the region between the graph of y=0.5(sin(x^2)^2) and the x-axis (from 0 to squareroot pi) about the y-axis.
The answer pi^2/4, but I don't understand how to get the answer, I can set up the integral but can't simplify it to that answer.
Homework Equations
y=0.5(sin(x^2)^2)
The Attempt at a Solution
First to get the radius in terms of y -> y=0.5sin^2(x^2), thus √arcsin(√2y)=x
The volume is thus calculated via the disk method and is equal to the integral of pi√arcsin(√2y), from 0 to √pi. I don't know where to go form there,maybe I didn't set up the integral correctly?