Find the interval(s) on which $f(x) = x e^{- x}$ is strictly increasing.

(1, \infty)

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(0, 2)

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(-\infty, 1)

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(0, e)

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Show the answer and explanation

CorrectNot quiteAnswer C

Correct answer: C

Worth noting

$(1, \infty)$ is where the derivative has the opposite sign.

Ten questions from Increasing & Decreasing Functions, at your own pace.

Ten questions from Increasing & Decreasing Functions, at your own pace.

Find the interval(s) on which f(x)=xe−xf(x) = x e^{- x}f(x)=xe−x is strictly increasing.