(one /(x*(log(x) + one)^ three))*(-(log(x) + one)^ three - three *(log(x) + one)^ two)/(x*(log(x) + one)^ three) = zero
(1 divide by (x multiply by ( logarithm of (x) plus 1) cubed )) multiply by ( minus ( logarithm of (x) plus 1) cubed minus 3 multiply by ( logarithm of (x) plus 1) squared ) divide by (x multiply by ( logarithm of (x) plus 1) cubed ) equally 0
(one divide by (x multiply by ( logarithm of (x) plus one) to the power of three)) multiply by ( minus ( logarithm of (x) plus one) to the power of three minus three multiply by ( logarithm of (x) plus one) to the power of two) divide by (x multiply by ( logarithm of (x) plus one) to the power of three) equally zero