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AstridWipenaugh@lemmy.world
9 points

The TI-89 was ~$100 when I bought one 20 years ago. Looked it up on Amazon and they’re $100-$150 depending on the specific model. They haven’t kept up with inflation at all, which means they’ve been getting cheaper this whole time…

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uis@lemm.ee
7 points

For 100$ you can buy new phone and install any math software you want

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Klaymore@sh.itjust.works
1 point

Please tell me what calculator app is as nice as a physical calculator, I haven’t found one yet

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JackbyDev@programming.dev
1 point

I mean, even just one that has the functions of a graphing calculator.

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Opisek@lemmy.world
1 point

For Android, CalcES. It’s modelled after the Casio scientific calculators, so if you’ve ever used those, the app will come naturally to you. Absolute must-have if you want to calculate anything complicated on your phone.

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Zacryon@lemmy.wtf
2 points

Wolframalpha

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silasmariner@programming.dev
1 point

J (technically it’s a whole unique programming language with a learning curve that’s arguably more of a learning cliff, but it’s very heavily geared towards maths and also has some nice graphing modules)

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SuperSpruce@lemmy.zip
2 points

I use Calc84 on the Google Play store, free with minimal ads and a one-time fee to remove ads.

But it seems like others have found FOSS versions here.

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PolarisFx@lemmy.dbzer0.com
9 points
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Grab the rom for whichever Texas Instruments calculator you like best and use one of the various TI8X emulators:

https://www.f-droid.org/en/packages/com.eanema.graph89/

Just google for the rom file you want. I just tried the TI92+ found here:

https://wowroms.com/en/roms/mame/download-ti-92-plus/108878.html

Weird calculator, but one of the more common TI models should look just as nice

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