Ratio Calculations (Ratio) (Fx-95Es Plus Only) - Casio fx-82ES PLUS User Manual

• "No-Solution" appears on the solution screen when no solution exists for
an inequality (such as X
Ratio Calculations (RATIO) (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
3. On the Coefficient 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
then input the following for the coefficients (a = 3, b = 8, d = 12): 3
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 Coefficient
Editor: ,
statements also cannot be input with the Coefficient Editor.
4. After all the values are the way you want, press
• This displays the solution (value of X). Pressing
to the Coefficient Editor.
Important!
• A Math ERROR will occur if you perform a calculation while 0 is input for a coefficient.
+ bX + c ≧ 0)
2
(INEQ) (aX + bX + c)
2
(aX
1 0 0
2
< 0).
(a:b=X:d) or
(M-), (STO). Pol, Rec, and multi-
51
(a:b=c:X).
in step 1, and
8
.
.
again will return