indefinite-integration

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



1) $\tan \,(1+\log x)+c$
2) $\cot \,(1+\log x)+c$
3) $-\tan \,(1+\log x)+c$
4) $-\cot (\,1+\log x)+c$
Solution: Explanation: No Explanation
Integration by substitution

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