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Choose the correct answer from the given alternatives in the following question: If A' = -12[1-4-12], then A = ______. - Mathematics and Statistics

MCQ

Choose the correct answer from the given alternatives in the following question:

If A' = `- 1/2[(1,-4),(-1,2)]`, then A = ______.

Options

  • `[(2,4),(-1,1)]`

  • `[(2,4),(1,-1)]`

  • `[(2,-4),(1,1)]`

  • `[(2,4),(1,1)]`

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Solution

`[(2,4),(1,1)]`

Notes

[Note: Answer in the textbook is incorrect.]

Concept: Inverse of a Matrix
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