A=⎣⎡1234234134124123⎦⎤
[A∣E]=⎣⎡1234234134124∣11∣02∣03∣0010000100001⎦⎤
IIr+Ir(-2)
IIIr+Ir(-3)
IIIIr+Ir(-4)
⎣⎡10002−1−2−73−2−8−104∣1−7∣−2−10∣−3−13∣−4010000100001⎦⎤
IIr(-1)
IIIr+IIr(-2)
IIIIr+IIr(-7)
⎣⎡1000210032−444∣17∣24∣136∣100−1−2−700100001⎦⎤
IIIr⋅(−41)
IIIIr+IIIr
⎣⎡1000210032104∣17∣2−1∣−0.2540∣110−10.5−900−0.2510001⎦⎤
IIIIr⋅401
IIIr+IIIIr
IIr+IIIr(-2)+IIIIr(-7)
Ir+IIr(-2)+IIIr(-3)+IIIIr(-4)
⎣⎡1000010000100∣0∣0∣1∣−0.2250.0250.0250.2750.0250.0250.275−0.2250.0250.275−0.2250.0250.275−0.2250.0250.025⎦⎤
A−1==⎣⎡−0.2250.0250.0250.2750.0250.0250.275−0.2250.0250.275−0.2250.0250.275−0.2250.0250.025⎦⎤
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