Functions of Several Variables

Define functions of several variables by writing an equation such as f (x, y, z) = ax + y2 + 2z or g(x, y) = 2x + sin 3xy, placing the insertion point in the equation, and choosing New Definition from the Define submenu. Just as in the case of functions of one variable, the system always operates on expressions that it obtains from evaluating the function at a point.