, If A= [ 1 2 3 3 −2 1 4 2 1 ] and B=[ −1 2 3 3 −2 1 −4 2 1 ] , then find 2A-B .
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Step-by-step explanation:
Since, 2A+3B=[
23−24
5
] …………(1)
A+2B=[
5
1
0
6
3
2
] ………….(2)
2× Equation (2)− Equation (1)
⇒2A+4B−2A−3B=[
10−2
2−3
0+1
12−2
6−4
4−5
]
⇒B=[
8
−1
1
10
2
−1
]
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