Re: Complex conjugate function for the 42s? Message #2 Posted by Karl Schneider on 26 Oct 2008, 11:13 p.m., in response to message #1 by Hal Bitton in Boise
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Just realized that my 42s doesn't seem to have a conjugate function.
Just now?
;)
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There seems to be no mention of it the users guide either. Granted, it's easy enough to decompose the complex number, CHS, and recompose, but in so doing the contents of the T register is lost.
...
If indeed "conjugate" is excluded from the 42s, any thoughts as to why?
The HP42S has no menu of intrinsic complexnumber functions or direct entry of complex numbers, as the RPLbased models have  including the HP28C and HP28S that debuted earlier. Therefore, the Re(), Im(), and Arg() functions are missing from the HP42S as well.
Loss of stack tregister for these operations is another good point.
I believe that a complete ('sticky') menu, even at the cost of separating "COMPLEX" into two threekeystroke functions "R>C" and "C>R", would have been a very good idea.
Here's a set of complexnumber functions for the HP15C:
http://www.hpmuseum.org/cgisys/cgiwrap/hpmuseum/archv018.cgi?read=137175#137175
 KS
Edited: 26 Oct 2008, 11:13 p.m.
