Calculate the derivative with respect to x of

$\displaystyle {\ln{{(}}}$7*x+5*y$\displaystyle {)}$

Derivative $\displaystyle =$Preview Question 6  

Use * for multiply (such as 7*x*y^2),

use ^ for exponents (such as x^3 for $\displaystyle {x}^{{3}}$), and

use YP for y' (= dy/dx )