User Manual

102

7 - 2 Linear Equations with Two to Six Unknowns

k Solving Linear Equations with Three Unknowns

Example To solve the following linear equations for x, y, and z:

4x + y –2z =–1

x +6y +3z =1

–5x +4y + 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 a1 → coefficient b1 → coefficient c1 → coefficient d1 →

coefficient an → coefficient bn → coefficient cn → coefficient dn (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 23456

Highlighted solution cell value