indefinite-integration

Question: $\int_{{}}^{{}}{\frac{1+\tan x}{x+\log \sec x}\ dx=}$



1) $\log (x+\log \sec x)+c$
2) $-\log (x+\log \sec x)+c$
3) $\log (x-\log \sec x)+c$
4) None of these
Solution: Explanation: No Explanation
Integration by substitution

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