解: [1/(1-x)^2]'=-[1/(1-x)^4]×[(1-x)^2]'
=-[1/(1-x)^4]×[2(1-x)×(-1)]
=2/(1-x)^3
注: 此题是一道复合函数求导数的题目,
注意利用常用导数公式: (1/x)'=-1/(x^2)
1/(1-x)^2
=(x-1)^(-2)
[(x-1)^(-2)]'=-2(x-1)^(-3)=-2/(x-1)³
f(x) = 1/(1-x)^2
f'(x) = (-2)/(1-x)^3 * (-1)
= 2/(1-x)^3#