Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!zephyr.ens.tek.com!tekig5!kevinc From: kevinc@tekig5.PEN.TEK.COM (Kevin E Cosgrove) Newsgroups: comp.sys.handhelds Subject: Re: "No errata" in HP48 revision D? Message-ID: <6662@tekig5.PEN.TEK.COM> Date: 29 Jul 90 22:36:07 GMT References: <1990Jul27.224836.22140@cc.ic.ac.uk> Reply-To: kevinc@tekig5.PEN.TEK.COM (Kevin E Cosgrove) Organization: Tektronix, Inc., Beaverton, OR. Lines: 24 In article <1990Jul27.224836.22140@cc.ic.ac.uk> umapd51@cc.ic.ac.uk writes: > >The anomaly, erratum, error or bug in revision D is that if you enter a >SYMBOLIC complex number in the form '(A,symbol (not a less than sign), then the HP48 returns this as >'B*COS(A)+i*B*SIN(A)' instead of 'A*COS(B)+i*A*SIN(B)'. This ONLY >happens if you enter a symbolic complex number, and only if you enter it >in polar form. A simple solution is to enter symbolic complex numbers in >the rectangular form '(X,Y)'. Actually, I have never heard of a user >wanting to use symbolic polar entry, so this should not be a problem to >most users. Rats! Now I wish I'd waited just a little longer to get my 48. The reason I have the calculator is that I wanted easier treatment of complex numbers and matricies. I have found myself in situations where entering symbolic angle notation would have been the easiest route. Does anyone out there know HP's policy on upgrading a ROM for a customer that needs performance in the area of a bug? Thanks.... Kevin Cosgrove