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Evaluate: (i) int(sinx)/(1+cos^2x)\ dx (...

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

Text Solution

Verified by Experts

(i) It is given that
`int frac{sin x}{(1+cos ^{2} x)} d x`
Take `y=cos x`
So we get
`d y=-sin x d x`
By substituting this in the equation
...
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