. If A = [ 2 0 −1 7 ] then A2 is
Answers
Answered by
0
Answer:
Correct option is
B
−7
Given A=[
1
−1
0
7
]
A
2
=[
1
−1
0
7
][
1
−1
0
7
]=[
1
−8
0
49
]
8A+kI=[
8
−8
0
56
]+[
k
0
0
k
]=[
8+k
−8
0
56+k
]
⇒8+k=1
⇒k=−7
Similar questions