1.

\[\int_{{}}^{{}}{{{e}^{x}}{{\tan }^{2}}({{e}^{x}})dx=}\]

A.            \[\tan ({{e}^{x}})-x+c\]
B.            \[{{e}^{x}}(\tan {{e}^{x}}-1)+c\]
C.            \[\sec ({{e}^{x}})+c\]
D.            \[\tan ({{e}^{x}})-{{e}^{x}}+c\]
Answer» E.


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