definite-integral

Question: $\int_{1}^{2}{{{e}^{x}}\left( \frac{1}{x}-\frac{1}{{{x}^{2}}} \right)\,dx=}$



1) $\frac{{{e}^{2}}}{2}+e$
2) $e-\frac{{{e}^{2}}}{2}$
3) $\frac{{{e}^{2}}}{2}-e$
4) None of these
Solution: Explanation: No Explanation
Fundamental definite integration Definite integration by substitution

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