Very, very nice. Thanks for this wonderful software. Because of it's speed relative to my trusty old TI-89 and color, I prefer the Prizm for routine things. Your software is another reason to use my Titanium a little less, though I still like it. too....

It,s a great program, the only thing I miss is a better solver than Casios so I don't have to use Wolfram Alpha. But from what I have read in this thread that isn't possible in Eigenmath?

I have experimented with developing a solver using Newton's method. But it wouldn't be better than Casio's SolveN in any way. There is not a straightforward way in Eigenmath to reorder the terms the way one wishes, especially not when taking about logarithms, exponents and trigonometric functions (logic would have to be added so that it knows how the "opposites" of these functions behave). If there was a way to reorder terms like that, the solver would only need to move terms around in the whole expression, to extract the value of a specific variable.

Really good job!
I like it very much and it helps me with mathematics a lot.
But I think Eigenmath is not powerful enough, at least it cannot solve an inequation.
And I found a more powerful CAS called XCAS/GIAC written in C++, and it's already been ported to the nspire. So would it be possible to port it to the Prizm?
Anyway, thank you again for you good work!

The Nspire has far better hardware characteristics than the Prizm has, especially much more RAM, which is important for KhiCAS. Porting giac/xcas to the Prizm would therefore be much harder, if possible at all.

What a great addition to the Prizm, thanks!

Is there any way to bind buttons to just print certain commands, as in if I press F1 it would print out "taylor(" and then let me enter the paramaters? Right now I have, for example, integrate(last) mapped to one key and it integrates the last expression, but this doesn't really work for functions with more parameters.

Also, is there any way to always get lower case letters? As it is right now, if i want to start typing with lowercase, I have to do shift-alpha-f5. Not a huge deal, though.

No, and no. And for now I'm not adding new features to this Eigenmath port, sorry.

Hello
On the fx9860gII, if you enter (a+x)^5 in the Eigenmath add-in, you get : a^5+5*a^4*x+10*a^3*x^2+10*a^2*x^3+5*a*x^4+
the final part (x^5) is missing !! It is the same for all "long" answers
Does this version of Eigenmath have the same bug as the one on fx9860gII ?
Thanks

No, there isn't any problem of this kind on the Prizm version. I suppose that's because of the near absence of UI in the fx9860 version, and I imagine the output isn't very advanced (eg no scrolling...), so maybe "long aswers" may not be printed well :s...

Hello !!
Are the "Laplace(" and "dsolve(" fonctions working in "Eigenmath prizm" ?
Since they are in the source code ...

Laplace : https://github.com/gbl08ma/eigenmath/blob/master/src/laplace.cpp

Dsolve : https://github.com/gbl08ma/eigenmath/blob/master/src/dsolve.cpp

Dsolve seems to work. Laplace doesn't, and it doesn't on the computer version either, it's commented in the code. It may have some problems and so the developer of Eigenmath disabled it, or it may not be meant to be called directly but instead by used by other functions.

Thanks for the answer !!
Is the dsolve( function activated in "Eigenmath prizm" ? Because it doesn't seem to work on the computer version ...
Its sad that Laplace doesn't work, its a very useful command ...
I also have a sugestion for you. I exchanged some mails with the author or SMIB (http://smib.sourceforge.net/) about the difference between the antiderivative and the integral command.
He told me that "antider( is more powerful. It is better than eigenmath's integral( , because list of integrals has been extended, and antider( solves problems like integral of rational fuctions, or handles composition of fuctions.".
Could you extend the list of integrals in Eigenmath by using the one from SMIB ?
Thanks for your answers

I have tried bringing things in from SMIB before and everything turned out to be a big mess, mostly because SMIB has forked from the original Eigenmath a lot of time ago/on another code tree, so bringing things in requires lots of adjustments. Also, SMIB functions seem to be more resource-demanding than Eigenmath's ones so they don't work as well on the Prizm. I may give a look at it, though, however I don't have much time nor motivation for this, as I can't use a calc at uni (let alone a CAS calc) and when I want to confirm results WA works as well.

Would be cool if you could improve Eigenmath by using SMIB's code. For example if you compare the "integral(" source code on both Eigenmath and SMIB you can see a major difference , SMIB is much more powerful ...

Newb question
The Australian version of the Prizm limits memory to 4.5MB
How much space does Eigenmath take up?

less than 300kb I think

Hello everyone,

It's been a while...

Recently Matt2022 left a review on the Eigenmath file on the Cemetech archives, which sent me an email alert, which is why I'm here. I already let him know through PM about this, but I thought I'd necro-bump this thread for more visibility. I'll probably also edit the first post.

This add-in has serious compatibility problems with the fx-CG 50, because I hardcoded the VRAM address and it changed on the fx-CG50 (and possibly recent OS versions of the fx-CG 10/20), leading to UI display issues. But worry not: someone has released a patched version for this more recent model. See here: https://github.com/gbl08ma/eigenmath/issues/9

It seems a port of χCAS has also since been developed: https://www-fourier.ujf-grenoble.fr/~parisse/casio/khicasioen.html

As for me, I really have abandoned Prizm development for good, I may go back to it in the distant future if I get extra nostalgic and have some free time. For now my life is quite busy, as I'm finishing up my master's dissertation while simultaneously doing a bit of freelance work and managing other personal side-projects.

Good luck and thanks