(one - four *x)^(one /x)*(- four /(x*(one - four *x)) - log(one - four *x)/x^ two) = zero
(1 minus 4 multiply by x) to the power of (1 divide by x) multiply by ( minus 4 divide by (x multiply by (1 minus 4 multiply by x)) minus logarithm of (1 minus 4 multiply by x) divide by x squared ) equally 0
(one minus four multiply by x) to the power of (one divide by x) multiply by ( minus four divide by (x multiply by (one minus four multiply by x)) minus logarithm of (one minus four multiply by x) divide by x to the power of two) equally zero