Casio FX-82ES PLUS User Manual

(INEQ) (aX
2
+ bX + c)
(aX
2
+ bX + c ≧ 0)
1 0 0
• "No-Solution" appears on the solution screen when no solution exists for
an inequality (such as X
2
< 0).
Ratio Calculations (RA
TIO) (fx-95ES
PLUS only)
The RATIO Mode lets you determine the value of X in the ratio expression
a : b = X : d (or a : b = c : X) when the values of a, b, c and d are known.
The following shows the general procedure for using RATIO.
1. Press
(RATIO) to enter the RATIO Mode.
2. On the menu that appears, select (a:b=X:d) or (a:b=c:X).
3. On the Coef
ficient Editor screen that appears, input up to 10 digits for
each of the required values (a, b, c, d).
• To solve 3 : 8 = X : 12 for X, for example, press
in step 1, and
then input the following for the coef
ficients (a = 3, b = 8, d = 12): 3
8
12 .
• 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 reset all of the coefficients to zero.
Note: The following operations are not supported by the Coef
ficient
Editor:
, (M-), (STO). Pol, Rec, and multi-
statements also cannot be input with the Coef
ficient Editor.
4. After all the values are the way you want, press
.
• This displays the solution (value of X). Pressing again will return
to the Coef
ficient Editor.
Important!
• A Math ERROR will occur if you perform a calculation while 0 is input for a coefficient.
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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