y=(x-1)(x+1)(x+3)的导数

问题描述:

y=(x-1)(x+1)(x+3)的导数

y=(x-1)(x+1)(x+3)的导数
y'=(x+1)(x+3)+(x-1)(x+3)+(x-1)(x+1)
=x方+4x+3+x方+2x-3+x方-1
=3x方+6x-1