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Select the correct option from the given alternatives:If `A = [[i,0],[0,frac{i}{2}]]` `i = sqrt(-1)`, then `A^-1 = ` i] `[[i,0],[0,frac{i}{2}]]` ii] `[[-i,0],[0,-2i]]` iii] `[[i,0],[0,2i]]` iv] `[[i,0],[2i,0]]`

A

`[[i,0],[0,frac{i}{2}]]`

B

`[[-i,0],[0,-2i]]`

C

`[[I,0],[0,2i]]`

D

`[[i,0],[2i,0]]`

Text Solution

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CHETANA PUBLICATION-Matrices-EXERCISE
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  2. Select the correct option from the given alternatives. If for the mat...

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  3. Select the correct option from the given alternatives:If A = [[i,0],[0...

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  4. Select the correct option from the given alternatives. If A is an inve...

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  5. Select the correct option from theg given alternativesIf A and B are n...

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  6. If A = [[a,b],[c,d]] then adj(adjA) is equal to; i] adjA ii] A ii...

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  7. Select the correct option from the given alternatives. Solutions of eq...

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  8. Select the correct option from the given alternatives. The element in ...

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  9. Select the correct option from the given alternatives.The sum of three...

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  10. Select the correct option from the given alternatives.If A = [[2,3],[4...

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  11. Select the correct option from the given alternatives: If [[1,-tanthet...

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  12. Select the correct option from the given alternatives: If A = [[3,-3,4...

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  13. Select the correct option from the given alternatives [[6,-5,1],[4,2,-...

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  14. Select the correct option from the given alternatives. Let A = [[5,5al...

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  15. Select and write the most appropriate answer from the given alternativ...

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  16. Select and write the most appropriate answer from the given alternativ...

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  17. Select and write the most appropriate answer from the given alternativ...

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  18. Attempt the following: If A= [[1,0,0],[2,1,0],[3,3,1]] then reduce it ...

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  19. [[-1,2],[-3,4]] Find the co-factors of the elements of the matrices.

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  20. A = [[2,-3],[3,5]] Find the adjoint of the matrices.

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