Even more generally, we could consider a function of two real variables.
A can be regarded as a function of a real variable.
Most special functions are considered as a function of a complex variable.
Recent results shows that such behavior is shared by other functions of independent random variables.
So far we have been considering j as a function of a complex variable.
One may also use substitution when integrating functions of several variables.
An important paper in the theory of functions of several complex variables.
The formula for integration by parts can be extended to functions of several variables.
In college mathematics exercises often depend on functions of a real variable.
For instance, in a system modeled as a function of two variables .