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EXAMPLE 15 Using the Inverse Matrix to Solve a System of Linear Equations
Solve the system of equations:
SOLUTION
Enter the following matrices into your TI-83:
1 1 0
= −
A
1 3 4
0 4 3
Obtain the following on your home screeen:
Now hit ENTER to obtain the result:
+ =
x y
− +
+
x
3
y
4
z
+
4
y
3
z
3
= −
B
3
2
3
= −
3
=
2
w
w
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