What is the easiest way to define a complex number in exponential form in maple? What is the easiest way to define a complex number in exponential form in maple?
Is there a built-in function?
eg: $\underline{Z} = 600 \cdot e^{-j45^\circ}$

Maple works in radians.
Maple is very happy to work with expressions of the form $\tt 5*exp(I*Pi)$.
For example:
$$\tt Re(5*exp(I*Pi));$$
$$\tt -5$$
