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Evaluate the Integral Using Integration by Parts xexdx\int x \mathrm { e } ^ { - x } \mathrm { dx }

Question 57

Multiple Choice

Evaluate the integral using integration by parts.
- xexdx\int x \mathrm { e } ^ { - x } \mathrm { dx }


A) - x ex\mathrm { e } ^ { - \mathrm { x } } - ex\mathrm { e } ^ { - \mathrm { x } } + C
B) - x ex\mathrm { e } ^ { - \mathrm { x } } + ex\mathrm { e } ^ { - \mathrm { x } } + C
C) x ex\mathrm { e } ^ { - \mathrm { x } } + ex\mathrm { e } ^ { - \mathrm { x } } + C
D) x ex\mathrm { e } ^ { - \mathrm { x } } - ex\mathrm { e } ^ { - \mathrm { x } } + C

Correct Answer:

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