导数运算习题 y=(x+1)^2(x-1)
问题描述:
导数运算习题 y=(x+1)^2(x-1)
答
y'=(x^2+2x+1)'*(x-1)+(x^2+2x+1)*(x-1)'
=(2x+2)*(x-1)+(x^2+2x+1)*1
=(2x^2-2)+(x^2+2x+1)
=3x^2+2x-1