indefinite-integration

Question: $\int_{{}}^{{}}{\frac{1}{\sqrt{1+\cos x}}\ dx=}$

1) $\sqrt{2}\log \left( \sec \frac{x}{2}+\tan \frac{x}{2} \right)+K$

2) $\frac{1}{\sqrt{2}}\log \left( \sec \frac{x}{2}+\tan \frac{x}{2} \right)+K$

3) $\log \left( \sec \frac{x}{2}+\tan \frac{x}{2} \right)+K$

4) None of these

Solution:

Explanation: No Explanation

Fundamental integration

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