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