Casio fx-115ES PLUS - Page 12

fx-115ES PLUS 2nd Edition Quick Start Guide
12
INEQ MODE
INEQ Mode allows you to solve a quadratic inequality or a cubic inequality. Press wR1 to
enter INEQ Mode and select quadratic or cubic.
Solve x
2
+ 2x – 3 < 0:
1. Press 1 to select a quadratic inequality.
2. Press 2 to select the less than inequality.
3.Enterthecoefcientsofeachtermandtheconstant
by pressing 1=2=z3=.
4.Press= to display the solution set.