设f(x)=x(x-1)(x-2)(x-3)...(x-10),则f'(0)等于多少?

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设f(x)=x(x-1)(x-2)(x-3)...(x-10),则f'(0)等于多少?

f′(x)=(x)′*(x-1)(x-2)(x-3)...(x-10)+x*[(x-1)(x-2)(x-3)...(x-10)]′
故f'(0)=(0-1)(0-2)(0-3)...(0-10)=10!=3628800

f'(0)=10!