# Math Help - Logarithmic Differentiation

1. ## Logarithmic Differentiation

in the very last step, why is X^sin^2(x) added to the right of the equal sign?

2. Originally Posted by Evan.Kimia

in the very last step, why is X^sin^2(x) added to the right of the equal sign?
u have 1/y on the left, so multiply y on both sides to isolate dy/dx. substitute y with original equation.