Casio fx-991ZA PLUS II User Manual

Note: Solutions are displayed as shown here
when Linear Display is selected
Example 3: 2x
3
- 3x
2
≧ 0 (MthIO-MathO)
(INEQ) (aX
3
+ bX
2
+ cX + d)
(aX
3
+ bX
2
+ cX + d ≧ 0)
2 3
Example 4: 3x
3
+ 3x
2
- x > 0 (MthIO-MathO)
(INEQ) (aX
3
+ bX
2
+ cX + d)
(aX
3
+ bX
2
+ cX + d > 0)
3 3 1
Note: Solutions are displayed as shown here
when Linear Display is selected.
Special Solution Display
•
"All Real Numbers" appears on the solution screen when the solution of
an inequality is all numbers.
Example: x
2
≧ 0 (MthIO-MathO)
(INEQ) (aX
2
+ bX + c)
(aX
2
+ bX + c ≧ 0)
1 0 0
80

Casio fx-991ZA PLUS II Specifications

General

Type	Scientific Calculator
Number of Functions	552
Equation Solver	Yes
Matrix Calculations	Yes
Complex Number Calculations	Yes
Integration	Yes
Differentiation	Yes
Memory	9 variables
Weight	95 g
Protective Case	Yes
Display	Natural Textbook Display
Power Source	Solar and Battery