Evaluate: (i) `int(sinx)/(1+cos^2x) dx`(ii) `int(2x^3)/(4+x^8) dx`

1.	Evaluate: (i) `int(sinx)/(1+cos^2x) dx`(ii) `int(2x^3)/(4+x^8) dx`
Answer» Correct Answer - `(i) (1)/(4)tan^(-1) .(x^(4))/(2)+c (ii) cos ((1)/(x)) +c `

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