- #1

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## Homework Statement

Prove

## Homework Equations

(π^3)/12≤∫_0^(π/2)▒〖(4x^2)/(2-sinx) dx≥(π^3)/6〗

Also look at atachment

## The Attempt at a Solution

I can't get round this one, since when you substitute x by 0 is always 0 and I don't know how to get ∏^3/12