How to take derivative of two variables?

To take the derivative of a function with two variables, you can use partial derivatives. For a function ( f(x, y) ), the partial derivative with respect to ( x ) is denoted as ( \frac{\partial f}{\partial x} ) and is calculated by treating ( y ) as a constant. Similarly, the partial derivative with respect to ( y ) is denoted as ( \frac{\partial f}{\partial y} ) and is found by treating ( x ) as a constant. You can compute these derivatives using standard differentiation rules applied to each variable individually.