Find the derivative of f(x)=(x+1)/(x−1)f(x) = (x+1)/(x-1)f(x)=(x+1)/(x−1).
−2/(x−1)2-2 / (x-1)^2−2/(x−1)2
2/(x−1)22 / (x-1)^22/(x−1)2
0
1