y=(x+1)(x-1)(x-2)求导

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y=(x+1)(x-1)(x-2)求导y=(x+1)(x-1)(x-2)求导y=(x+1)(x-1)(x-2)求导y''=(x+1)''(x-1)(x-2)+(x+1)(x-1)''(x-2)+(x+1)(

y=(x+1)(x-1)(x-2)求导
y=(x+1)(x-1)(x-2)求导

y=(x+1)(x-1)(x-2)求导
y' = (x+1)'(x-1)(x-2)+(x+1)(x-1)'(x-2)+(x+1)(x-1)(x-2)'
　= 1*(x-1)(x-2)+(x+1)*1*(x-2)+(x+1)(x-1)*1
　= ……

3x^2-4x-1

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