Casio FX-9750G plus User Manual page 130

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