"Did You Know..." Archive

Did you know…

…that you can draw different lines for equations by going to the "Y=" menu, pressing left twice, and pressing enter to cycle through the different line types? (edit)

…that the TI-Basic Developer has a complete TI-Basic Starter Kit filled with important tutorials, guides, and tips for new TI-Basic programmers? (edit)

…that TI 84+CSE and CE calculators have ten high-resolution image slots that can be used as backgrounds for graphing? (edit)

…that the color tokens on a TI-84+CSE/CE can be used as number equivalents for math? For example, BLUE*5 equals 50 while DARKGRAY-4 equals 20? (edit)

…that you can use check max(N=L₁ to check if N is in L₁, and 1+sum(not(cumSum(N=L₁ to tell where? (edit)

…that you can store an empty string into a string variable, but you cannot perform operations on it? (edit)

…that if you have a rather bulky matrix or list, you can store it as a string to one of the sequence variables, u,v,w and halve the size? Then, you can evaluate the expression using said variable and Ans(X) where X equals the list or matrix element you want? (edit)

…that it is actually sometimes better to leave on the closing parentheses on the For( loop? (edit)

…that a memory leak is caused when you use a Goto/Lbl within a loop or If conditional (anything that has an End command) to jump out of that control structure before the End command is reached? (edit)

…that you can omit the closing parentheses, quote, square bracket, curly brace, etc. at the end of a command or function? (edit)

…that while using seq(, the calculator can still interpret keypresses and store them to getKey? (edit)

…that you can use tanh(E9X to compute the sign of X? (edit)

…that Line( has an optional fifth argument that, if zero, will erase the pixels on a line? (edit)

…that you can replace the "Done" message that appears after a program is finished running by placing an expression, some text, or just a quote on the last line of your program? (edit)

…that you can use rand(# to create a time delay? (edit)

…that you can use multiple text arguments at the end of one Text( command to write, for example, Text(R,C,"Score",S)? (edit)

…that you can draw with different plot marks using Pt-On(X,Y,#)? (edit)

…that you can save memory when displaying text by replacing words such as "If" and "Then" with the appropriate commands? (edit)

…that "0<X<10" will actually compare "0<X" first, and compares the result (0 or 1) to 10, so "0<X and X<10" should be used instead? (edit)

…that using ΔList( together with cumSum( will return a list with its first element removed? (edit)

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