Changing The Inequality Type; Ineq Mode Calculation Examples - Casio fx-991ZA PLUS II User Manual

• Pressing will clear all of the coefficients to zero.
Note: The following operations are not supported by the Coefficient
Editor: ,
statements also cannot be input with the Coefficient Editor.
5. After all the values are the way you want, press
• This will display the solutions.
• To return to the Coefficient Editor while the solutions are displayed,
press .
Note
• Values cannot be converted to engineering notation on the solution screen.

Changing the Inequality Type

Press (INEQ) and then select an inequality type from the menu
that appears. Changing the inequality type causes the values of all
Coefficient Editor coefficients to change to zero.

INEQ Mode Calculation Examples

2
Example 1: x + 2x - 3 < 0 (MthIO-MathO)
+ 2x - 3 ≧ 0 (MthIO-MathO)
2
Example 2:
x
(M-), (STO). Pol, Rec, ÷R, and multi-
2
(INEQ) (aX + bX + c)
2
(aX + bX + c < 0)
1 2
+ bX + c ≧ 0)
2
(INEQ) (aX + bX + c)
2
(aX
1 2
79
.
3
3