Casio FX-82ES PLUS User Manual

Important!
• Regression coefficient, correlation coefficient, and estimated value calculations can
take considerable time when there are a large number of data items.
Equation Calculations (EQN)
(fx-95ES PLUS only)
Y
ou can use the following procedure in the EQN Mode to solve
simultaneous linear equations with two or three unknowns, quadratic
equations, and cubic equations.
1. Press
(EQN) to enter the EQN Mode.
2. On the menu that appears, select an equation type.
To select this
calculation type:
Press this key:
Simultaneous linear
equations with two
unknowns
(a
n
X + b
n
Y = c
n
)
Simultaneous linear
equations with three
unknowns
(a
n
X + b
n
Y + c
n
Z = d
n
)
Quadratic equation (aX
2
+ bX + c = 0)
Cubic equation (aX
3
+ bX
2
+ cX + d = 0)
3. Use the Coefficient Editor that appears to input coefficient values.
• To solve 2x
2
+ x - 3 = 0, for example, press in step 2, and then
input the following for the coef
ficients (a = 2, b = 1, c = -3): 2
1
3 .
• To change a coefficient value you already have input, move the cursor
to the appropriate cell, input the new value, and then press .
• Pressing will clear all of the coefficients to zero.
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Casio FX-82ES PLUS Specifications

General

Type	Scientific
Cover	-
Form factor	Pocket
Control type	Buttons
Product color	Black
Operation	256
Digits	12 digits
Display tilting	No
Display size (HxV)	31 x 96 mm
Display number of lines	- lines
Battery type	AAA
Power source	Battery
Auto power off	Yes
Battery life (max)	17000 h

Weight and Dimensions

Depth	161 mm
Width	80 mm
Height	13.8 mm
Weight	110 g