Unreliable complex calculation in CAS? Bug?

[Dands]

(04-08-2020 02:14 AM)victorvbc Wrote:  

(04-08-2020 01:08 AM)Dands Wrote:  So it's a bug or something wrong with my CAS settings?

I think the problem is that the polar input in CAS doesn't give results in exact form... not much you can do abt that, maybe it's a bug. Wouldn't be hard to write your own routine for that in PPL though.

If you input all the phasors in exact form (cos(x)+i*sin(x) or complex exponential) the CAS gives the correct exact result vector:

[[1443*√3/100],[-1443*√3/100],[0]]

The problem is that if you're in degrees mode, the exponential form will only take arguments in radians. I say that because I tried to input 14.43∠30° as 14.43e^i30 and did not get the answer.

I probably found another good example showing why the polar capabilities in CAS need to be improved asap.

Thanks