Casio ALGEBRA FX 2.0 Manual - Página 3
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Example
To solve the following simultaneous linear equations for
x
4
+
x
+ 6
x
– 5
+ 4
Procedure
1 m EQUA
2 1(SIML)
2(3)
3 ewbw-cw-bw
bwgwdwbw
-fwewbw-hw
4 6(SOLV)
Result Screen
# Internal calculations are performed using a 15-
digit mantissa, but results are displayed using
a 10-digit mantissa and a 2-digit exponent.
# Simultaneous linear equations are solved by
inverting the matrix containing the coefficients
of the equations. For example, the following
x
x
shows the solution (
,
1
ous linear equation with three unknowns.
x
a
b
1
1
1
=
x
a
b
2
2
2
x
a
b
3
3
3
4-1-2
Simultaneous Linear Equations
y
z
– 2
= – 1
y
z
+ 3
=
1
y
z
+
= – 7
x
,
) of a simultane-
2
3
c
–1
d
1
1
c
d
2
2
c
d
3
3
19990401
Because of this, precision is reduced as the
value of the determinant approaches zero. Also,
simultaneous equations with three or more
unknowns may take a very long time to solve.
# An error occurs if the calculator is unable to find
a solution.
# After calculation is complete, you can press
1 (REPT), change coefficient values, and then
re-calculate.
x
y
z
,
, and