r/calculators

What calculator should I get next?

I’ve currently got 4 calculators (listed below), but I’m soon moving into university (to do Mathematics), and I’d like something more capable, what should I get?

Casio 991EX (Yes, a legitimate one, I got this 5 years ago and has been great!)
Casio 991CW
Casio CG100
TI-Nspire CX CAS

I’ll keep the CG100 for exams as it’s legal, but I’d like a more powerful calculator for when I’m not in exams.

Oh and please don’t tell me I made a mistake in choosing the CG100 over the CG50 - I’m well aware of it.

Should I get a CX II CAS? Or a HP prime G2?

And when shall we expect the CX III and the Prime G3?

Hi, does anyone know where I can get a replacement part for an HP 50G calculator? I lost the back cover that protects the batteries from falling out.

I just found an offer of 5 ti-nspires with a charging bar and a ti nspire acces point, two ti 83 plus and one ti 84 plus silver edition for 50$ with some other ti stuff that is not precisely shown

How do you get the LCD out of a TI-84 Plus? It seems to be attached to a metal frame of sorts. I don't want to completely destroy the unit by blindly prying so I'm hoping someone here knows. Searches are fruitless.

Hello again Rezanovas,

it is a quite huge time I didnt announce anything because I was doing massive changes to architecture and capabilities that I forgot to announce more.

here are the biggest changes:

integration:

- indefinite

risch Norman, transcendental, and algebraic (up to genus 1 only

- definite

Not yet but will be massively added and upgraded with double and triple integrals in one to two days

equation:

- symbolic capabilities are strong along full support of FERRARI/CARDANO

- Numeric: ultimate support with Newton Raphson, ITP, newton secant, and many powerful algorithms for both real and complex cases

Limits:

- real and powerful with many algorithms and it now support lite version of gruntz but soonly full gruntz

And the biggest update of all are the TABS:

just like how you use tabs in browsers, the same for Rezanova calculator which gives ysers more control on their workspaces

and there are many more features I will announce later but now I am doing heavy benchmark testing with Thomas, Stewart, Paul notes, openstax, and many more sources to check current capabilities honesty and limits

I forgot to mention now that the current repo supercarrier architecture is fully build and functional like I promised and remaining is surface protocol for embedibility and integration

there are many more things to be added but I am running out of time and may stop soonly. Hope someone makes use of my app and extend it after me because I will pause at 20 July. I am very sorry not to achieve all of the designated goals like graphing, and profiling system but hope to continue next year summer vacation.

CASIO fx-9750GII

My calculator was showing the usual, default "Yt1:, Yt2: [...]" screen when in graph mode, but is now showing "Xt2", and the "X" button is instead typing "T".
(An example of the type of thing I need to graph, since that description is terrible, would be: 9x^3 - 63x^2 +101x -55 , to visually find an x-intercept. Precalculus.)

I am sure that I navigated away or changed something by accident, but I have no idea how to get back to normal graphing. Restarting the calculator worked once or twice, but is no longer effective, so I would desperately like to know how to return to the default graphing calculation settings/screen.

"i made a calculator in C if any1 wants to check it out go to a c compiler and paste the code

New in the community, second-year civil electrical engineer, and I'm about to enter the first of many hard classes in my career. My question is, can anyone recommend a scientific calculator? Bear in mind my student budget, and that, yes, I am considering a TI graphing calculator for later, but first, I just want to get through my physics tests safely without hyperbolic equations that my simple fx-82 can't handle. Thanks!

PS: I'm from Chile, so most calculator variants are limited or too expensive.