Question E.1: Use MATLAB to solve Example A.2....
Use MATLAB to solve Example A.2.
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From Example A.2, we obtain matrix A and vector B and enter them in MATLAB as follows.
>> A = [25 -5 -20 ; -5 10 -4 ; -5 -4 9]
A =
25 -5 -20
-5 10 -4
-5 -4 9
>> B = [50 0 0]’
B =
50
0
0
>> X = inv(A)*B
X =
29.6000
26.0000
28.0000
>> X = A\B
X =
29.6000
26.0000
28.0000
Thus, x_1 = 29.6, x_2 = 26, and x_3 = 28.
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