f(x)=x(x-1)(x+1)(x-3)的导函数f'(x)有几个零点?

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f(x)=x(x-1)(x+1)(x-3)的导函数f''(x)有几个零点?f(x)=x(x-1)(x+1)(x-3)的导函数f''(x)有几个零点?f(x)=x(x-1)(x+1)(x-3)的导函数f''(

f(x)=x(x-1)(x+1)(x-3)的导函数f'(x)有几个零点?
f(x)=x(x-1)(x+1)(x-3)的导函数f'(x)有几个零点?

f(x)=x(x-1)(x+1)(x-3)的导函数f'(x)有几个零点?
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