# Creating Algebraic Expressions - HP 48gII User Manual

Graphing calculator.

## Creating algebraic expressions

An algebraic expression is very similar to an arithmetic expression, except
that English and Greek letters may be included. The process of creating an
algebraic expression, therefore, follows the same idea as that of creating an
arithmetic expression, except that use of the alphabetic keyboard is included.
To illustrate the use of the Equation Writer to enter an algebraic equation we
will use the following example. Suppose that we want to enter the expression:
Use the following keystrokes:
2 / R3 ™™ * ~‚n + „¸\ ~‚m
™™ * ‚¹ ~„x + 2 * ~‚m * ~‚c
~„y ——— / ~‚t Q1/3
This results in the output:
In this example we used several lower-case English letters, e.g., x
(~„x), several Greek letters, e.g.,
combination of Greek and English letters, namely, y (~‚c
~„y). Keep in mind that to enter a lower-case English letter, you need
to use the combination: ~„ followed by the letter you want to enter.
2
x
2
e
LN
3
(~‚n), and even a
y
1
3 /
Page 2-8  