[quote=JoeyCC;229388]Well, this week I have a test on my worst mathematics topic so far. Complex Number. For me, someone who's not that bright, this is simply incomprehensible. I was wondering if someone could explain, in simple language and in digestable way, how to:

I am not too sure what you mean? Could you give an example?

- Work with complex numbers and learning to equate them

- Cis form (cos thetha + isin theta) and all that rubbish

We define the function to be

And by Euler's formula we have that

So

If you have any specific quetions just ask

This is simply saying

- De Moivre's Theorem

The simple reason is

Do you have any specific problems or examples we could use to help explain any of these concepts?