indefinite-integration

Question: $\int_{{}}^{{}}{{{e}^{x}}{{\tan }^{2}}({{e}^{x}})dx=}$

1) $\tan ({{e}^{x}})-x+c$

2) ${{e}^{x}}(\tan {{e}^{x}}-1)+c$

3) $\sec ({{e}^{x}})+c$

4) $\tan ({{e}^{x}})-{{e}^{x}}+c$

Solution:

Explanation: No Explanation

Integration by substitution

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