Casio fx-9750G PLUS - Manual (Page 130)

102
7 - 2
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 , y , and z :
4 x + y – 2 z = –1
x + 6 y + 3 z = 1
–5 x + 4 y + z = –7
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:
coefficient a
1
→ coefficient b
1
→ coefficient c
1
→ coefficient d
1
→
coefficient a
n
→ coefficient b
n
→ coefficient c
n
→ coefficient d
n
( n = 2 to 6)
• You can input fractions and value memory contents as coefficients.
3. After inputting the coefficients, solve the equations.
1 (SOLV)
Coefficient input cells
Value being input into highlighted cell
1 2 3 4 5 6
1 2 3 4 5 6
·
·
·
·
Highlighted solution cell value