r/Caclulator

see title

I wanted to calculate (70.1*10^12)^150000 and every single calculator told me infinity or too big ):

This is so annoying to me. The HP35 can't even do matrix operations natively yet other ones can? Why can't I bring my HP42s? It's certainly not as advanced as some of the others they allow. Am I missing something here?

Recommend a good non-programmable calculator that can do 4x4 matrix operations and solve 4-variable equations. Please avoid recommending the Casio fx-9910CW. I used the EX version earlier. I hate this new CW one.

Bonsoir,

J’ai ouvert la NumWorks pour changer la batterie mais je n’arrive pas à démonter celle qui est dessus car elle est collée.

Savez-vous comment faire svp?

I've been exploring the features of graphing calculators and realized there are probably many useful shortcuts that beginners don't know about.

What's one calculator shortcut or lesser-known feature that you find genuinely useful?

It could be something related to graphing, equation solving, statistics, or navigating menus.

I'd love to learn some tips from experienced calculator users!

26 years, 2nd battery.

P=0,1mW

I have decided to get a graphing calculator, and I am stuck between the HP Prime G2 and the TI Nspire CX II CAS. I have used Desmos and a desktop calculator that had a basic CAS, so I want to buy a calculator which won't feel too different from that. I have been able to use the Nspire for a bit and the Prime through an emulator, and I did notice some differences between them.

The Nspire seems to be able to graph functions and points at the same time, while the Prime can only do one at a time, which is pretty annoying if it actually doesn't support that. It also doesn't seem to be able to find zeros or intersections or go to X or Y values precisely when in the advanced graphing mode, while the Nspire seemed to be able to do that when I tried it out. The Prime is also a bit confusing with its seperate "Home" and CAS modes (that share functions anyways so there's no point in seperating them??) and in the way that it has both lists and spreadsheets. However, the touchscreen and help system in the Prime is so much better to use than the Nspire's jumpy touchpad and the random menus of functions. I actually haven't really had any real problems with the Nspire document system, I just make a blank document if the scratchpad doesn't support a feature and then just delete it afterwards.

I was originally planning to buy the Nspire because it was recommended along with another TI calculator, but after checking here I decided to see how the Prime compared just in case it was actually better. I'm looking for something that matches the way Desmos works and the easy features it has the closest. Both calculators are approved and only differ in price by $10, so the only thing I'm comparing are their feature sets and the features I immediately noticed that felt different. Should I buy the Prime, or should I still stick with buying the Nspire?