Entering Expressions And Instructions - Texas Instruments TI-84 Plus CE Getting Started

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.
Most TI-84 Plus CE 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
•
. If you enter LOG , the TI-84 Plus CE interprets the entry as implied multiplication
G
of the variables L , O and G .
• When working with matrices, do not type the individual keys for [ , A and ]. Use the
NAMES menu in y ¾ to paste the matrix name [A] to the cursor position.
Calculate 3.76 P (L7.9 + ‡ 5) + 2 log 45.
MathPrint™
Ë 76 ¥ £ k 7 Ë 9 Ã y C 5 ~ ¤
3
à 2 « 45 ¤ Í
The ~ is a notable keystroke
Note:
difference as compared to Classic.
In MathPrint™ mode, press ~ to get out of the MathPrint™ template and
Note:
continue entering the expression.
Multiple Entries on a Line
To enter two or more expressions or instructions on a line, separate them with colons
(ƒ m). All instructions are stored together in last entry y [.
30 Evaluating Expressions
Expressions evaluate to the
(approximate) decimal display
(
Classic
Ë 76 ¥ £ k 7 Ë 9 Ã y C 5 ¤
3
¤ Ã 2 « 45 ¤ Í