Solve this following

Question:

Mark $(\sqrt{ })$ against the correct answer in the following:

$f(\mathrm{x})=\mathrm{x}^{2} \mathrm{e}^{-\mathrm{x}}$ is increasing in

A. $(-2,0)$

B. $(0,2)$

C. $(2, \infty)$

D. $(-\infty, \infty)$

Solution:

But in the interval $(0,2)$ the function is increasing.

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