Find the derivative of f(x)=sinh−1(x)=ln(x+x2+1)f(x) = \sinh^{-1}(x) = \ln(x + \sqrt{x^2+1})f(x)=sinh−1(x)=ln(x+x2+1).
1/1−x21/\sqrt{1-x^2}1/1−x2
1/1+x21/\sqrt{1+x^2}1/1+x2
1/(1+x2)1/(1+x^2)1/(1+x2)
x/1+x2x/\sqrt{1+x^2}x/1+x2