Casio fx-991EX User Manual

fx-991EX Quick Start Guide 43
POLYNOMIAL EQUATIONS
The fx-991EX has the computing power to solve polynomial equations up to 4th degree.
To start solving polynomial equations, in the Equation/Func icon,
press i2(Polynomial).
Select the degree of the polynomial. For this example, use a
3rd degree polynomial. Press 3(Degree).
Fill out the template for a 3rd degree polynomial. Type in each
coefcient followed by the p key.
x
3
+ 4x
2
+x – 6 = 0
Press p to solve the equation.
Use the arrow keys (ER) to toggle through the solutions.
EQUATION/FUNC

Casio fx-991EX Specifications

General

Type	Scientific
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black, White
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Digits	16 digits
Display type	LCD
Display resolution	192 x 63 pixels
Display number of lines	2 lines
Display number of characters	16
Storage media type	-
Operation	552
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	165.5 mm
Width	77 mm
Height	11.1 mm
Weight	90 g