definite-integral

Question: The value of $\int_{\,0}^{\,\pi /2}{\frac{{{e}^{{{x}^{2}}}}}{{{e}^{{{x}^{2}}}}+{{e}^{{{\left( \frac{\pi }{2}\,\,-\,\,x \right)}^{2}}}}}dx}$ is



1) $\pi /4$
2) $\pi /2$
3) ${{e}^{{{\pi }^{2}}/16}}$
4) ${{e}^{{{\pi }^{2}}/4}}$
Solution: Explanation: No Explanation
Properties of definite integration

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