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pixeljam 15 hours ago [-]
Cool! Is it based on KhiCAS for the CG50 (the one with the extremely confusing documentation)?
Also doesn't this pose a risk of being used in math exams? I remember hearing a kid in my high school trying to cheat through the aforementioned.
mkprc 2 days ago [-]
I wonder who would install this onto their calculator in earnest. Like, who’s the segment of folks with the savvy to learn about this and install this on their TI calculator, but who aren’t savvy enough to just learn to do the computations in curricular calculus class?
acjohnson55 21 hours ago [-]
I used to use a TI-89 in high school, which had a calculus-enabled CAS built-in. It was really handy for checking my work and for working on components of problems. And if you're in a class where the work is more applied math, like physics, it's really helpful so that you can think of the overall problem without getting bogged down in the computation.
aaronbrethorst 15 hours ago [-]
I 'cheated' in my Astronomy 1001 class by reverse engineering some sort of moon phase calculation I was supposed to do every day, by hand, for a month.
I didn't want to check the location of the moon at the same time every day so I just worked out the math instead, and then fudged the numbers on the worksheet so they wouldn't look too perfect.
Highschool nerds, that is why there are plenty of CASIO graphical calculators with this stuff built-in.
Which are quite common outside US, where the TI monopoly with the education system doesn't exist.
jgx0 16 hours ago [-]
What's really novel and innovative about this is that you just plug the calculator into your computer and press install.
kevmo314 18 hours ago [-]
I definitely would’ve installed it as a kid. It’s not about the computations it’s about doing it with style.
idiotsecant 17 hours ago [-]
There is absolutely an overlap in those two circles. The venn diagram is almost exclusively people who are heavily motivated by novelty and hate the drudgery of actual work. I have been a pathological member of that particular venn diagram overlap for my whole life. It's exactly as maladaptive as you might imagine.
mkprc 2 days ago [-]
Snap judgment, but it appears to be a vibe coded interface added to an existing CAS for a TI-84 Plus CE calculator.
GregDavidson 19 hours ago [-]
I can run Maxima on my phone. Heaven!
oliculipolicula 17 hours ago [-]
It's most likely based on the Poor Man's Integrator (amongst other tricks)
is this just a total guess? the repository says it's forked from KhiCAS, which is a ti84 port of Giac/Xcas, which can do full Risch integration if necessary
It's certainly a valuable tool when doing calculus. I used one while taking calculus and other undergrad math.
However, it does not include a computer algebra system and does not help with symbolic evaluation of integrals or derivates, which I believe is what this FlowCE thing is supposed to do.
The ti-92 and ti-89 have some of this built in, but they have a much larger ROM and use a 32-bit processor instead of an 8-bit processor.
The ti-84 plus ce that this runs on is much newer, has a significant amount of user accessible flash and while the processor is still 8-bit, it runs much faster; computer algebra needs a pretty good amount of code, and the earlier ti calculators, like the ti-85 just don't have enough storage for that, and probably not enough computation to make it reasonable to use if it had enough storage.
j45 1 hours ago [-]
Appreciate this insightful post.
Symbolic evaluation is definitely a different level.
The ti 85 is definitely old, it used to still be more capable than the ti84 but the difference between the ti84 of the past and today is clearer.
Dwedit 15 hours ago [-]
TI85 can do very basic calculus-like things, such as estimating numeric slope at a point on a graph, and numerical area under a curve. Those correspond to derivative and integral.
Also doesn't this pose a risk of being used in math exams? I remember hearing a kid in my high school trying to cheat through the aforementioned.
I didn't want to check the location of the moon at the same time every day so I just worked out the math instead, and then fudged the numbers on the worksheet so they wouldn't look too perfect.
I did this back in...1999 or 2000, I think? Apparently kids are still doing the same silly assignment a quarter century later: https://www.reddit.com/r/uofmn/comments/1km6zzv/comment/mseh...
I feel like this would describe me to a T.
Which are quite common outside US, where the TI monopoly with the education system doesn't exist.
https://mathoverflow.net/questions/67727/the-easiest-symboli...
Treasure trove for people into this sort of thing https://www.researchgate.net/profile/Robert-Dr-Kragler
https://github.com/KhiCAS/ti-ce-giac/blob/main/kintg.cc#L288...
https://github.com/tommyb3ll/ti-ce-giac https://github.com/tommyb3ll/ti-ce-giac/blob/main/kintg.cc#L...
why do you think it's unlikely? if KhiCAS does it, why wouldn't this fork?
Parts of it looked very much like pmint's core tactic of matching coefficients (given a form)
> FlowCE fills most of the calculator's memory (2.8 MB)
The ti-85 only had 28kB ram according to wikipedia.
So yeah, won't fit.
https://en.wikipedia.org/wiki/TI-85
However, it does not include a computer algebra system and does not help with symbolic evaluation of integrals or derivates, which I believe is what this FlowCE thing is supposed to do.
The ti-92 and ti-89 have some of this built in, but they have a much larger ROM and use a 32-bit processor instead of an 8-bit processor.
The ti-84 plus ce that this runs on is much newer, has a significant amount of user accessible flash and while the processor is still 8-bit, it runs much faster; computer algebra needs a pretty good amount of code, and the earlier ti calculators, like the ti-85 just don't have enough storage for that, and probably not enough computation to make it reasonable to use if it had enough storage.
Symbolic evaluation is definitely a different level.
The ti 85 is definitely old, it used to still be more capable than the ti84 but the difference between the ti84 of the past and today is clearer.