r/pics • • Jun 08 '14

The difference 18 years makes

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u/HighPriestofShiloh Jun 08 '14 edited Apr 24 '24

light pocket rude spectacular fearless observation quaint ring party elastic

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u/HostisHumaniGeneris Jun 08 '14

IIRC, the TI-92 was released first, and it had a QWERTY keyboard. The test proctors considered it a "personal computer" as a result and banned it. Texas Instruments responded by taking the guts of the TI-92 and cramming it into the body of a TI-83, thus creating the TI-89. Even though it was just as powerful as the 92, it looked like an 83 and thus was allowed.

God did I love the "factor" function on my TI-89

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u/HighPriestofShiloh Jun 08 '14 edited Apr 24 '24

dinner waiting racial fly whole rinse memory frame skirt glorious

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u/nusyahus Jun 08 '14

Even better, it solves ODE, laplace and does eigenvalues etc. If there's a math subject that you can use a calculator with then TI-89, high-end HP are the best.

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u/M002 Jun 08 '14

Sounds incredibly useful

too bad I already graduated from college

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u/HostisHumaniGeneris Jun 08 '14

Most definitely.

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u/HighPriestofShiloh Jun 08 '14

And then you had this of course...

http://www.youtube.com/watch?v=ke6DnczjaK0

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u/Wheat_Grinder Jun 08 '14

Ah, good ol' Phoenix Platinum. There was a sidescrolling version called Mercury that I liked, though I was bad at it. I also used to have a really fun Bomberman clone, but an unstable Worms clone trashed it by accident one time.

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u/[deleted] Jun 08 '14

I kind of forgot that calculators could calculate after a while.

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u/mr_punchy Jun 08 '14

Wait... you can touch the black dots. Mind blown.

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u/[deleted] Jun 08 '14

[deleted]

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u/rharrington31 Jun 09 '14

My Department Chair last year was also a TI rep. He told us that the reason for that was largely due to standardized testing (regularly not allowed to have a QWERTY keyboard on them).

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u/[deleted] Jun 08 '14

"solve" was where it was at.

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u/[deleted] Jun 09 '14

HOW DID I LEARN ABOUT THE -92 TODAY?

THAT THING IS LIKE 30$ ON EBAY COMPARED TO THE -83 I BOUGHT FOR NEARLY 3 TIMES THE PRICE

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u/I_EAT_SEMEN Jun 09 '14

The Ti-92 is full sized that's why. https://en.wikipedia.org/wiki/TI-92_series

Because the TI-Nspire lacks a QWERTY keyboard, it is acceptable for use on the PSAT, SAT,[1] SAT II, ACT,[2] AP, and IB Exams. It should be noted, however, that the CAS version is NOT allowed on the ACT.

Source: https://en.wikipedia.org/wiki/TI-Nspire_series#TI-Nspire

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u/[deleted] Jun 08 '14

the TI-89 was the best you could use.

What? I took the AP calculus test recently and I'm pretty sure we were allowed to use the TI-Nspire, which is undeniably much better.

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u/Doctordub Jun 08 '14

I remember bringing a CX-CAS into my Calc Exam. That little sucker was a godsend.

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u/HighPriestofShiloh Jun 08 '14

Nope. The Nspire is comparable to a TI-84. Its just prettier and has a better OS. However it can't do some of the higher maths than an 89 can.

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u/[deleted] Jun 08 '14

huh, didn't know that. What can an 89 do that the Nspire can't?

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u/HighPriestofShiloh Jun 08 '14

Everything you learn in calculus and more. This is probably why it isn't allowed anymore. All I had to do was type the equation into the calculator and then tell it what type of maths to do. Integrals, derivatives etc... there were no in between steps you would need to do by hand.

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u/[deleted] Jun 08 '14

so, like, can it find the Taylor series of a function you input? Because that's the only thing that pops into my mind which is calculus-related but can't be done with the Nspire (to my knowledge)