indefinite-integration

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



1) $\tan (x{{e}^{x}})+c$
2) $\sec (x{{e}^{x}})\tan (x{{e}^{x}})+c$
3) $-\tan (x{{e}^{x}})+c$
4) None of these
Solution: Explanation: No Explanation
Integration by substitution

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