91Ó°ÊÓ

The inverse cotangent function, denoted by \(\cot ^{-1}(x),\) is defined to be the inverse of the restricted cotangent function: \(\cot (x), 0

Find the derivatives of the functions. For extra practice, and to check your answers, do some of these in more than one way if possible. $$\frac{x+1}{x-1}$$