indefinite-integration

Question: $\int_{{}}^{{}}{\frac{1+{{\cos }^{2}}x}{{{\sin }^{2}}x}dx}=$

1) $-\cot x-2x+c$

2) $-2\cot x-2x+c$

3) $-2\cot x-x+c$

4) $-2\cot x+x+c$

Solution:

Explanation: No Explanation

Fundamental integration

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