Casio CFX-9970G Manual - Página 4

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Casio CFX-9970G Manual
7 - 2
Linear Equations with Two to Six Unknowns
k k k k k Solving Linear Equations with Three Unknowns
Example
1. While in the Linear Equation Mode (SIML), press 2 (3), because the linear
equations being solved have three unknowns.
2. Input each coefficient.
Each time you press w, the input value is registered in the highlighted cell.
Each press of w inputs values in the following sequence:
• You can input fractions and value memory contents as coefficients.
3. After inputting the coefficients, solve the equations.
To solve the following linear equations for
x
y
z
4
+
– 2
x
y
z
+ 6
+ 3
x
y
z
–5
+ 4
+
ewbw-cw-bw
bwgwdwbw
-fwewbw-hw
a
coefficient
coefficient
1
a
coefficient
coefficient
n
1(SOLV)
= –1
= 1
= –7
Value being input into highlighted cell
b
c
coefficient
1
·
·
·
·
b
c
coefficient
n
x
y
z
,
, and
:
Coefficient input cells
1
2 3 4 5 6
d
coefficient
1
1
d
n
coefficient
(
= 2 to 6)
n
n
1
2 3 4 5 6
Highlighted solution cell value
102