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Let f(x)=|secxcosx s e c^2x+cotx cos e c...

Let `f(x)=|secxcosx s e c^2x+cotx cos e c\ x cos^2x cos^2x cos e c^2x1cos^2x cos^2x|` . Prove that `int_0^(pi//2)f(x)dx=-pi/4-8/(15)` .

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The correct Answer is:
`-((15pi+32)/(60))`
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