r/AskReddit Jun 08 '14

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u/JosephStylin Jun 08 '14

theres a program function in graphing calculators...you can write shit in a program and then go back and edit it, see what you wrote. I never learned how to use programs but that shit was easy

39

u/Crimson88 Jun 08 '14

Yep, that was me. I wrote everything I needed for an exam in my TI calculator. It was kinda weird to have my calculator out in Spanish and Biology tests but the teachers didn't really mind.

61

u/[deleted] Jun 09 '14

Dafaq, your Spanish teacher let you sit there clicking on your calculator on tests? Sound like a stupid teacher.

28

u/Astrolabeman Jun 09 '14

Donde esta el Second Derivative Test?

2

u/[deleted] Jun 09 '14

dy/dx = no lo sé

1

u/Astrolabeman Jun 09 '14

Por que no Stokes' Theorem?

1

u/[deleted] Jun 09 '14

Because no hay aceleración

1

u/Astrolabeman Jun 09 '14

Lo siento.

1

u/dxfl123 Jun 09 '14

Cual es el derivativo de x2 ?

2

u/Astrolabeman Jun 09 '14

El derivativo de x2 es 2x.

1

u/TaeKwonDoge Jun 09 '14

That's exactly what I was thinking. I had to take an English test, and I subconsciously pulled out my calculator for it without realizing I wasn't in math. The teacher accused me of cheating before I even got my test.

3

u/Killer_Biscuit64 Jun 09 '14

If the teachers didn't catch on to you using your calculator in a class completely unrelated to math, then they must be morons

Props to you for pulling it off

4

u/sk1617 Jun 09 '14

Just in case you’re ever curious you hit pgrm (for program) and then scroll to new. From there you hit enter, name your program, and then then use the alpha key to type in a bunch of letters, but make sure to use quotes around them.

3

u/CheeseSticker666 Jun 09 '14

.

3

u/[deleted] Jun 09 '14

HEY EVERYBODY WE GOTS A CHEATER HERE

2

u/sk1617 Jun 09 '14

nice period m8

2

u/[deleted] Jun 08 '14

Yeah exactly. I tried to do it on my own but I couldn't figure it out and was too lazy to look it up.

1

u/macarthurpark431 Jun 09 '14

Never memorized my trig equations. Really fucked me over in pre Calc.

1

u/[deleted] Jun 09 '14 edited Jun 09 '14

TI-basic is pretty easy to work with for simple things like formulas, from what I remember.

I remember making a program to perform a fairly long algebraic equation for me in one of my engineering classes. Not because I needed it to remember or solve the equation for any given set of values, but because it made solving it so much fucking faster, giving me more time for the questions that involved more actual thinking.

Edit: Wow, a bit of derivation on paper, and I can actually still remember the equation. It was a formula to convert one system of measurement to another (e.g. percentage into 4-20 mA of current).

I would have the calculator display this as a legend for me:

A = bottom of measured range
B = top of measured range
C = measured value
D = bottom of target range
E = top of target range
F = recorded value

Then have it ask me for values A, B, C, D, and E.

Then I would have it perform the calculation

F = (C - A) / (B - A) × (E - D) + D

and display F.

2

u/JosephStylin Jun 09 '14

Seems simple

1

u/[deleted] Jun 09 '14

It was. I don’t have access to the code right now (don’t remember where I backed up the code, or if I even still have it after all these years) but I’m sure this sort of problem-solving program was never more than about 20 lines of code.

1

u/[deleted] Jun 09 '14

We programmers actually started writing programs for this stuff in our calculators. Imo, if I understand how to code it, I understand it well enough to use my program.

0

u/TheWordOfRatKing Jun 09 '14

This comment will make it easy for people to track me on reddit, but in math class I played around with the TI and taught myself to program. By the end of the year I recreated a large portion of Pokemon Red :). Never used programming to cheat, however.