Casio fx-115ES PLUS - Page 5

fx-115ES PLUS 2nd Edition Quick Start Guide
5
COMP MODE
Calculating Expressions:
The r key allows you to enter an expression with
variables, assign values for each variable and then
automatically calculate the expression, without having to
storevaluesforthevariablerst.
1. Enter the expression, 3A + B, by pressing
3Qz+Qx.
2. Press r.
3. Enter 5 for A by pressing 5=.
4.Enter10forB by pressing 10=.
5. The values of A and B can be used to solve additional
expressions, without using r.