设f(x)函数在[0,+∞)上连续,且满足,则f(x)是:A. xe-x B.

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问题 设f(x)函数在[0,+∞)上连续,且满足,则f(x)是:A. xe-xB. xe-x-ex-1C. ex-2D. (x-1)e-x

选项 A. xe-x
B. xe-x-ex-1
C. ex-2
D. (x-1)e-x

答案 B

解析
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