HP Prime - Using the Solver App with custom, multi-character variables (Part 1)
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- Опубліковано 5 чер 2019
- How to use custom, multi-character variable names with the HP Prime solver app -- "Part 1" shows how to set it up
Link for Part 2: • HP Prime - Using the S...
Link for Part 3: • HP Prime - Using the S...
Thanks! it's useful to my HP 39gii, regards from México!
Glad you found it helpful. Thanks for letting me know. Salud!
double click Alpha to keep letters on. Press once to exit. Acts like shift lock.
Good tip, Mike. Thanks for letting others (and me) know.
Thanks for this trick. A pity it doesn't work the same way as in an RPL-machine. FYI, you can find the semicolon also on ALPHA and then the +-key, but you probably figured that out by now already :-)
Agree. RPL was really elegant and cohesive. And, yes, at some point I noticed that semi-colon hiding in plain sight!
One other comment -- I plan to add another video shown, showing a simpler way to add custom variables in a less-permanent (perhaps) way. The idea is that you first use STO and then type in the name of the variable(s). You'll be prompted to auto-create the variable. I don't get why HP have not built the same functionality into the solver itself.
@@scottcollins7513 Looking forward to that! Indeed, there is so much room for improvement in the prime. I also don't like all those restrictions. For instance, lower case characters in CAS and uppercase in HOME, predefined variables for matrices, lists, real numbers... why not just create them on the fly (without the prompt), etc. I also don't think they're improving the prime further. Something as common as spherical coordinates is still not implemented! (after 7 years)... Otherwise it's a nicely built machine. Build quality and buttons are much better than a 50g. (which is my only real complaint about the 50G)
Would you tell me where I could find the original post? I am having the MOST difficulties with this. :(
Here are 2 videos on the Prime solver. Hopefully, they will help w/ you what you are looking for:
Basic intro:
ua-cam.com/video/hujPkFOseYM/v-deo.html
One other one that might be of some use down the line.
ua-cam.com/video/hwxiwG6vNqM/v-deo.html
Thx dude...
You're welcome. Thanks for the feedback.
I'm having problems using variables from different Export
Eg:
EXPORT a,e,i,o,u;
EXPORT b,c,d.
I can make X=a*b, but I can't use X=a*e. Can you help me?
Even though the app says the code is ok
I guess you can’t use «i» as a variable. That is assigned to sqrt(-1).
I wish HP would have just used the Solver application from the HP100/200, HP17B and HP19B.
I’m not familiar with that solver. My favorite was the HP28S - Wish the DM42 had that feature.
@@scottcollins7513: You missed a very interesting Solver then. Equations could be named and kept in a library to recall at will. They could be 2279 chars long and could include up to 256 variables. Local variables could be defined and used within the equation as well as constructs for looping, and conditionals like IF (even nested IFs). Global variables were shared among all the equations - so you could essentially chain complex calculations by having one equation compute a global variable that could then be used in another equation. All in all it was essentially a psudo programming language... it could be as obtuse to read as bad PERL code but was quite powerful!
@@rhymereason3449 That sounds very cool and more versatile (e.g. the conditionals and looping) than the HP 28S solver (though, to be fair, it could also be programmed). HP were amazing back in the day.
This seems to be missing a step or two. Different in current firmware.
The bad news is my video is falling out of sync with the current product. The good news is that hp is putting some effort into updating the firmware - that seems like a good thing. Thanks for the heads up, Mathew - appreciate it (even if I do not plan to invest any more time into the hp Prime videos). Take care.
how does it works now I can't do it