(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

π^2

4

∫ COS(√x) dx

0

2. Relevant equations

3. The attempt at a solution

t=√x ; x=t^2 ; dx= 2t

π

2

∫ COSt · 2t dt = [SINt · 2t ] - ∫ 2SINt dt = π +2

0

yes but.. where is the mistake?

'cause the result is: π/2 - 1

thanx a lot

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# Find the mistake

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