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If  A =  then find a + b:
  • a)
    6/20
  • b)
    7/20
  • c)
    8/20
  • d)
    5/20
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If A =then find a + b:a)6/20b)7/20c)8/20d)5/20Correct answer is option...
Given,
Using the formula,
AA-1 = 1
On comparing both matrix,
⇒ 3b = 1
⇒ b = 1/3
⇒ 2a − 0.1b = 0
⇒ 2a = 0.1b
⇒ a = 0.1b/2 …… (i)
Putting value of b in equation (i), we get
a = 1/60
Therefore, a = 1/60,b = 1/3
Hence, the correct option is (B).
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If A =then find a + b:a)6/20b)7/20c)8/20d)5/20Correct answer is option 'B'. Can you explain this answer?
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