Equation Calculations (Eqn); Changing The Current Equation Type Setting; Eqn Mode Calculation Examples - Casio fx-115ES PLUS User Manual

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To determine the logical XOR 0110102and 1100, (1010, xor 1100,)
@ 1010 lID @](BASE)@](xor)1100 lEI 0000000000000110
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To determine the logical XNOR 01111" and 10" (111"xnor 10")
@ 11111!!!1@](BASE)@)(xnor)1011E1 1111111111110101
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To determine the bitwise complement 011010, (Not(101O,))
@1!!!I@](BASE)II)(Not)1010rn lEI
1111111111110101
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To negate (take the two's complement) of 10110" (Neg(10110"))
@1ID@](BASE)!II(Neg)101101 CDlEI 1111111111010011
Note: In the case of a negative binary, octal or hexadecimal value, the
calculator converts the value to binary, takes the two's complement, and
then converts back to the original number base, For decimal (base-I 0)
values, the calculator merely adds a minus sign,
ll::i!!a,~'~~c!lJatio]s 1I(Qil,<..
=--
You can use the following procedure in the EON Mode to solve simultaneous
linear equations with two or three unknowns, quadratic equations, and cubic
equations.
1. Press Ii@ II) (EON) to enter the EON Mode.
2. On the menu that appears, select an equation type.
To select this calculation type: Press this key:
Simultaneous linear equations with two lIJ(a,X + b,y = c,)
unknowns
Simultaneous linear equations with
three unknowns
Ouadratic equation
Cubic equation
rn(a,X + b,y + c..z = d,)
@](aX'+bX+c=O)
@)(aX'+bX'+cX+d=O)
3. Use the Coefficient Editor that appears to input coefficient values.
"To solve 2x"+x-3 = 0, lor example, press @] in step 2, and then input
the following for the coefficients (a = 2, b = I, C = -3): 21E111E11B
3 lEI
"To change a cO,efficient v alue you already have input, move the cursor
to the appropriate cell, input the new value, and then press lEI.
"
Pressing @ will clear all of the coefficients to zero.
Important: The following operations are not supported by the Coefficient
Editor. 1MB, @!iI1MB(M-), I ID@!!I(STO). Pol, Rec, +R, andmulti-statements
also cannot be input with the Coefficient Editor.
4. After all the values are the way you want, press lEI.
"
This will display a solution. Each press 01 lEI will display another
solution. Pressing lEI while the linal solution is displayed will retum to
the Coefficient Editor.
"You can scroll between the solutions using the
~ and@ keys.
" To retum to the Coefficient Editor while any solution is displayed, press
@.
Note: "Even il Natural Display is selected, the solutions of simultaneous
linear equations are not displayed using any form that includes
r.
"Values cannot be converted to engineering notation on the solution screen.
E-35
" A message appears to let you know when there is no solution or when
there are infinite solutions. Pressing @ or lEI will retum to the Coefficient
Editor.
Changing the Current Equation Type Setting
Press 1i@!II(EON) and then select an equation type from the menu that
appears. Changing the equation type causes the values of all Coefficient
Editor coefficients to change to zero.
EaN Mode Calculation Examples
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2x"-3x-6=0 rmm
I!!ffiII)(EON)@](aX' + bX + c = 0)
2 IEIIB 31E11B 6 lEI lEI
(X,=) 3 +{ff
(X,=) 3 -{ff
3
"4
~ (V-Value Minimum=)- _ 5:
.
The local minimum value is displayedwhen a > O.The local maximumvalue
is displayed when a < O.
(X-Value Minimum=)"
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x'-2v'2x+2=0 rmm
I!Q!!) !II(EON)@](aX'+bX + c = 0)
11E11B2~2rn1El21E11E1 (X=) V2
E-36
J
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x+ 2y=3, 2x+ 3y=4
1i@!II(EON)IIJ(a.X
+ b,y = c,)
m
Mo.
1 lEI 2 lEI 3 lEI
[ .
J
2 lEI 3 lEI 4 lEI
4
lEI
(X=) -1
(V=)
2
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x- y+
Z =2, x + y-z = O,-x+ y+z =4
1!Q!!)!II(EON)rn(a,X + boY+ c..z = d,)
1 IEIIB 1 lEI 1 lEI 2 lEI
m
...
1 lEI 1 IEIIB 1 IEIO lEI
c
4
'I -, , 21
2 ,
-1-'
IBI lEI1lEI1lEI4 lEI
. ,
4
lEI
(X=) 1
(V=) 2
(Z=) 3