MuPAD® provides two functions for differentiation. The choice
of the function depends on which type of object you want to differentiate.
To differentiate mathematical expressions, use the
diff command. For example:
diff(cos(x), x); diff(x^3, x)
To differentiate a function or functional expression, use
D or its shortcut
'. Using this
command, you can differentiate any standard mathematical function
or your custom created function. For example:
D(cos); f := x -> x*sin(x): f'