HP48

Simple? SysRPL question
Hello, I have recently started playing around with SysRPL and I think I'm starting to get the hang of it. I have all the recommended documentation and am fumbling my way through it all. My question: Array and matrix operations, for example if I want to add two vectors [ 1 2 ] and [ 3 4 ] to get [ 4 6 ], I know I ... 11 Apr 2008 20:40

Testing for library presence.
On Tue, 08 Apr 2008 23:44:32 -0500: [use a library, if installed, assuming UserRPL] Since a library may be stored in any port, perhaps :&:nnn VTYPE should be tested (this seems to error on HP49/50 "iff" library nnn is not found, though I don't know whether this is guaranteed foolproof, including against a lib... 9 Apr 2008 03:45

Solving equations with ln()
Hi, I was trying to solve equations like: ln(2*x^2 - 3*x) > 2*ln(6 - x) but SOLVEVX doesn't work for this purpose (Iget: "Error: Not reducible to a rational expression"). So how can I do this? Thanks for your help. ... 12 Apr 2008 16:42

hp48g+, hp48gx
I JUST PURCHASED A NEW COMPUTER WITH VISTA OPERATING SYSTEM AND MY HP48G+ AND HP48GX CALCULATOR CONNECTIVITY KIT DOES NOT WORK. THE SAME KIT ALWAYS WORKED IN MY OLD COMPUTER WHICH HAS WINDOWS 2000. ... 9 Apr 2008 05:21

For collectors ...
Too expensive for me , but it's exceptional. Perhaps some of you could be interested ... http://cgi.ebay.com/Microcomputer-Elektronika-MK-90-DEC-PDP-11-based-NIB_W0QQitemZ200207762988QQihZ010QQcategoryZ4193QQrdZ1QQssPageNameZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem Philippe ... 9 Apr 2008 01:19

add phasors
Hello, I have read a lot on this group and other places but am still having a hard time figuring this out. So here's a practical example that should be easy to solve. Help will be very much appreciated! How do I add these two phasors with the HP 50g? (20 angle -30) + (40 angle 60) # phase is in degrees, angl... 8 Apr 2008 13:15

HP 50g: Help with quadratic regression
\<< sigmaDAT TRN AXL EVAL AXL OVER SQ AXL ROT DUP AXL SWAP 0 * 1 ADD AXL 3 COL\-> LSQ RCLVX PEVAL EVAL DUP STEQ />> Now before you reach for your Manual (which does not come with the product, and is not sold anywhere).. Try: An Introduction to Programming HP Graphing Calculators Second Edition by Mervin ... 6 Apr 2008 15:16

[UPDATED} EDGE: new kind of plotter
Dear all. In our ongoing quest to perfection, the Hydrix team have continued working on our EmbeDded Graphic Engine. It now works "a la" Google Map. Much more dynamic you can drag the graph around ; double click on a point to center etc.. You can also click on the various examples to directly generate the ... 8 Apr 2008 11:38

comments on the new "treebrowser" for 50G
can anyone comment on the treebrowser program for the 50G? is it worth it? ... 11 Apr 2008 16:42

negative exponents
Hello all, Just got a 50g and am loving it! Quick question: Is there a way to show negative exponents instead of the 1/x notation? I find it easier to look at e^-jt instead of 1/ e^jt. Thanks! Christoph ... 7 Apr 2008 11:27