# Complex Numbers & Functions

This app is already proving to be very useful as a quick and easy numerical approximation tool. Here are my feature requests:

- Matrices. I know these have already been mentioned, but their value would be incredible. (dot and cross product vector operations would also be nice).

- Complex numbers. If matrices are included, then complex number calculations could be parsed to 2x2 matrix calculations fairly easily.

- User definable functions and constants. For example, I write e:=m->cos(2*Pi/m)+I*sin(2*Pi/m) at the top of every Maple worksheet. It'd be great to be able to define it as a function in pi cubed so that I don't have to include the whole equation every time. I mention constants at the same time because these could be functions "without variables".

- Global variables. These would be useful say when evaluating a function f(x) for particular values of x.

If these are implemented then pi cubed will be my most used mathematical application, and Maple will drop much further down the list.

Complex numbers.

Joel's suggestions are spot on, if a bit daunting.

I would rate support for complex numbers as essential.

The rest would be very nice but not essential.

Please add complex number support ASAP!