Is there any way (downloading an app or whatever) to add POLAR FORM to the HP Prime's options for displaying complex numbers without having to take a rectangular form and manually converting it? It's sheer foolishness the way it's set up now: it's either rectangular form (a = bi), or rectangular form ((a,b)) and when you analyze AC circuits the voltages, currents and impedances are of the polar form. This is a big pain in the butt, and I expected more from HP because even the Casio 9750GII allows for polar-form complex number input AND output.
No need to add an app... polar form input and output is built into Home view. Just use this syntax:
magnitude ∡ angle
The ∡ symbol is accessed by pressing [Shift] [×].
For example, typing 8∡12 in Home view in degree mode means "absolute magnitude of 8 units, at an angle of 12°".
Furthermore, pressing the ∡ key when there's nothing on the edit line toggles the latest result between polar and rectangular display mode. If you highlight something on the history stack, pressing ∡ toggles that item between polar and rectangular.
Sometimes the result will look funny in Standard number format. For example, typing 3∡3 is displayed as 3∡3.00000000001 in Standard number format. An easy way to see a cleaner result is by pressing the [a b/c] key.
Hope that helps! Disclaimer: I don't work for HP. I'm just another happy HP calculator user.