User Manual
Entering Expressions and Instructions
You can use an expression on the home screen to calculate an answer. In most places
where a value is required, you can use an expression to enter a value.
Entering an Expression
To create an expression, you enter numbers, variables, and functions using the
keyboard and menus. An expression is evaluated when you press Í, regardless of
the cursor location. The entire expression is evaluated according to EOS™ rules, and the
answer is displayed according to the mode setting for Answer.
Note: Most TI-84PlusCE functions and operations are symbols comprising several
characters. You must enter the symbol from the keyboard or a menu; do not spell it
out. For example, to calculate the log of 45, you must press « 45. Do not enter the
letters L, O, and G. If you enter LOG, the TI-84PlusCE interprets the entry as implied
multiplication of the variables L, O, and G.
To enter a matrix name:
1. Press y ¾.
The Matrix Names menu appears.
2. Press the number on the keypad that corresponds with the desired Matrix Name.
Ex: Press 1 for [A] as shown.
Note: In MathPrint™ mode, press ~ to get out of the MathPrint™ template and
continue entering the expression.
Evaluating Expressions 31