f(x)=1/(1-x^2)(x
问题描述:
f(x)=1/(1-x^2)(x
答
y=1/(1-x^2)
1-x^2=1/y
x^2=1-1/y=(y-1)/y
x
f(x)=1/(1-x^2)(x
y=1/(1-x^2)
1-x^2=1/y
x^2=1-1/y=(y-1)/y
x