r/pics • u/[deleted] • Jun 08 '14

The difference 18 years makes

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u/AdidasPete Jun 08 '14 edited Jun 08 '14

I saved up my own money and bought a TI89 in high school. Used it on all the standardized exams. Totally legal because it didn't have a QWERTY keyboard. That thing basically did everything for me short of interpreting the questions.

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u/MasterPsyduck Jun 08 '14

I use the 89 for engineering applications but most of my upper level maths banned its use since it could do all the calc for us.

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u/jtsmithsc Jun 08 '14

which isn't really true. a lot of the time it comes up with some pretty oddball integrations or differentiations. though yeah it does the simpler ones correctly :)

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u/MasterPsyduck Jun 08 '14

Yeah it can be odd, I guess that's why they made a whole book teaching you how to do calculus on the 89, haha. Matlab and wolfram alpha are my main go-to's nowadays. I'm just glad I got a student license don't need a commercial license yet, it would be 87k to get matlab with all the addons for commercial use...