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If A = [[1,1,1],[1,1,1],[1,1,1]], A^(2) ...

If `A = [[1,1,1],[1,1,1],[1,1,1]], A^(2) =`

A

A

B

2A

C

unit matrix

D

3A

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The correct Answer is:
D
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KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 9-Mathematics
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  4. If omega is a cube root of unity |(1, omega, omega^(2)),(omega, omega^...

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  7. From the matrix equation AB = AC we can conclude B = C provided

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  8. Let A = [[1,2],[0,1]]. Then A^(n) =

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  9. In a triangle ABC if a = 2, B = 60^(@) and C = 75^(@), then b =

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  10. If tan^(-1) 2x + tan^(-1) 3x = (pi)/(4), then x =

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  12. cos^(-1).(2)/(sqrt(5)) + tan^(-1).(1)/(3) =

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  13. (1 + i)^(5) + (1 - i)^(5) =

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  14. The smallest integer n such that ((1 + i)/(1-i))^(n) = 1 is

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  15. cos[tan^(-1) {sin(cot^(-1) x)}] =

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