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Evaluate: int2xsec^2(x^2+3)tan(x^2+3)dx...

Evaluate: `int2xsec^2(x^2+3)tan(x^2+3)dx`

Text Solution

Verified by Experts

I=`int2xsec^3(x^2+3)tan(x^2+3)dx`
Let `sec(x^2+3)=t`
`2xsec(x^2+3)tan(x^2+3)dx=dt`
=`int t^2dt`
=`t^3/3+c`
=`1/3(sec(x^2+3))^3+c`
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