∫ ex1-x1+x22 dx is equal to (a) ex1+x+C (b) -ex1+x2+C – InterviewSolution

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1.	∫ ex1-x1+x22 dx is equal to (a) ex1+x+C (b) -ex1+x2+C (c) ex(1+x2)2+C (d) -ex(1+x2)2+C
Answer» $\int e^{x} {(\frac{1 - x}{1 + x^{2}})}^{2} d x is equal to (a) \frac{e^{x}}{1 + x} + C (b) - \frac{e^{x}}{1 + x^{2}} + C (c) \frac{e^{x}}{(1 + x}$ ²)2+C (d) -ex(1+x²)2+C

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