y=(x-1)(x-2)(x-3)(x-4)的导数

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y=(x-1)(x-2)(x-3)(x-4)的导数

y=(x-1)(x-2)(x-3)(x-4)的导数
y=(x-1)(x-2)(x-3)(x-4)的导数

y=(x-1)(x-2)(x-3)(x-4)的导数
y=(x-1)(x-2)(x-3)(x-4)=(x^2-5x)^2+10(x^2-5x)+24
y'=2(x^2-5x)(2x-5)+10(2x-5)
=(2x-5)(2x^2-10x+10)

y'=(x-2)(x-3)(x-4)+(x-1)【(x-2)(x-3)(x-4)】'
=(x-2)(x-3)(x-4)+(x-1)【(x-3)(x-4)+(x-2)[(x-3)(x-4)]'】
=(x-2)(x-3)(x-4)+(x-1)【(x-3)(x-4)+(x-2)【(x-4)+(x-3)】
=(x-2)(x-3)(x-4)+(x-1)【(x-3)(x-4)+(x-2)(x-4)+(x-2)(x-3)】
=(x-2)(x-3)(x-4)+(x-1)(x-3)(x-4)+(x-1)(x-2)(x-4)+(x-1)(x-2)(x-3)

y=(x²-3x+2)(x²-7x+12)=x^4-7x^3+12x²-3x^3+21x²+36x+2x²-14x+21
=x^4-10x^3+35x²+22x+21
y’=4x^3+30x²+70x+22