y=(x^2-2x+2)/(x-1)求导?谢谢!
问题描述：
y=(x^2-2x+2)/(x-1)求导?谢谢!
答
y=(x²-2x+2)/(x-1)
=x-1+1/(x-1)
所以y'=1-1/(x-1)²