Find ddx[x−1x+1]\frac{d}{dx}\left[\sqrt{\frac{x-1}{x+1}}\right]dxd[x+1x−1].
1(x+1)x2−1\frac{1}{(x+1)\sqrt{x^2-1}}(x+1)x2−11
1(x−1)(x+1)3\frac{1}{\sqrt{(x-1)(x+1)^3}}(x−1)(x+1)31
1(x+1)2(x−1)/(x+1)\frac{1}{(x+1)^2\sqrt{(x-1)/(x+1)}}(x+1)2(x−1)/(x+1)1
Both (a) and (b)