solving complex equation - Printable Version +- HP Forums ( https://www.hpmuseum.org/forum)+-- Forum: HP Calculators (and very old HP Computers) ( /forum-3.html)+--- Forum: HP Prime ( /forum-5.html)+--- Thread: solving complex equation ( /thread-2461.html) |

solving complex equation - Angus - 11-21-2014 09:49 AM
hi, I have an EE problem and hope to make things easier with the prime. It is about complex impedances in series and parallel. I have 3 known impedances and one unkown. there is zr:=270+i*300 zt:=330-j*1000 and an unkown impedance zu that result in a total impedace z:=60-i*160 z is zr in parallel with the series connection of zu+zt. I was hoping that the prime could do thw magic when solving 1/z = 1/zr + 1/(zr+zu) for zu. But I get an empty result. What am I doing wrong? RE: solving complex equation - Angus - 11-21-2014 10:29 AM
I'm an idiot.... "use i" in cas settings seems to do the trick. |