Let A =ቂ
2 1
0 −2
ቃ, B = ቂ
4 1
−3 −2
ቃ and C = ቂ
−3 2
−1 4
ቃ. Find A2
+ AC -5B
Answers
Answered by
0
Answer:
A=[
1
2
3
7
]
Using Row operations
A=IA
[
1
2
3
7
]=[
1
0
0
1
]A
R
2
1
=R
2
−R
1
[
1
0
3
1
]=[
1
−2
0
1
]A
R
1
1
=R
1
−3R
2
[
1
0
0
1
]=[
7
−2
−3
1
]A
∴I=A
−1
A
∴A
−1
=[
7
−2
−3
1
].
Answered by
0
Answer:
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