Casio FP-200 - Simultaneous Equations of the First Degree; Program Outline; Data Input

SIMULTANEOUS EQUATIONS
OF THE FIRST DEGREE
Of various mathematical operations, simulta-
neous linear equations in several variables are
used for a variety of applications. Although the
concepts and method of calculation of simulta-
neous linear equations in several variables are
simple and plain, solving those equations with
many variables is not so simple.
This program permits the FP-200 to solve simul-
taneous linear equations in several variables.
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When the program is started, it asks for the number of variables in the simultaneous
linear equations. Since this program can solve simultaneous linear equations with up to
six variables, the maximum number of variables that can be specified is 6.
In order to solve simultaneous equations in n variables, it is necessary that there be n
different equations. Input the coefficients and constants of the n equations. For
example, here are simultaneous equations in four variables .
. .\1x1 t B1x2+C1xJ+D1x,=E1············ 0
A2x1 + i32x2 + C2X3 + D2x4 = E2 ·········· .. @
A1x1+ f33x2+CJxJ+DJx,=E3"• ......... @
A,x1 + B,x2 + C,xJ + O,x, = E, ............ 0
When equation O is displayed, input A 1, B 1, Cl, D 1., and E 17 in that order. The pro-
gram then displays the prompt "OK?".
To correct the input data, press the N key. When there is no need to correct the input
data, press any key except the N key.
When you press the N key, the program waits for input of data from the beginning
(A 1 ). When you press any key except the N key, the program waits for input of the
coefficients and constant of equation 6.
When all the coefficients and constants have been input, the program immediately
starts the computation and displays the results.
Pressing the E key terminates program execution. To perform the calculation of another
set of simultaneous equations, press any key except the E key.