Sharp EL-5230 Equation Solvers, Simultaneous Linear Equations, a1x + b1y = c1 a2x + b2y = c2

Chapter 5

Equation Solvers

Simultaneous Linear Equations

Simultaneous linear equations with two unknowns (2-VLE) or with three unknowns (3-VLE) may be solved using this function.

12-VLE: b 3 0

a1x + b1y = c1 a2x + b2y = c2

23-VLE: b 3 1

a1x + b1y + c1z = d1 a2x + b2y + c2z = d2 a3x + b3y + c3z = d3

D=

D =

a1 b1 a2 b2

a1 b1 c1 a2 b2 c2 a3 b3 c3

•If the determinant D = 0, an error occurs.

•If the absolute value of an intermediate result or calculation result is equal to or greater than 1 ⋅ 10100, an error occurs.

•The results obtained by this function may include a margin of error.

Example 1

2x+3y = 4	Ò	x = ?
5x+6y = 7		y = ?

det(D) = ?

1.Press b 3 0 to select 2- VLE of the EQN mode.

2.Enter the value of each coefficient (a1, etc.)

2 e 3 e 4 e

5 e 6 e 7

a⁄z	0.
b⁄	0.
c⁄	0.

•Coefficients can be entered using ordinary arithmetic operations.

•To clear the entered coefficients, press j.

•Press d or u to move line by line. Press @ d or @ u to jump to the last or top line.

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