indefinite-integration

Question: If $\int_{{}}^{{}}{\frac{dx}{1+\sin x}=\tan \left( \frac{x}{2}+a \right)+b}$, then

1) $a=\frac{\pi }{4},\ b=3$

2) $a=-\frac{\pi }{4},\ b=3$

3) $a=\frac{\pi }{4},\ b=$arbitrary constant

4) $a=-\frac{\pi }{4},\ b=$arbitrary constant

Solution:

Explanation: No Explanation

Fundamental integration

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