(one - x)^(one /x)*(- one /(x*(one - x)) - log(one - x)/x^ two) = zero
(1 minus x) to the power of (1 divide by x) multiply by ( minus 1 divide by (x multiply by (1 minus x)) minus logarithm of (1 minus x) divide by x squared ) equally 0
(one minus x) to the power of (one divide by x) multiply by ( minus one divide by (x multiply by (one minus x)) minus logarithm of (one minus x) divide by x to the power of two) equally zero