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If A is a non-singular square matrix of order 3 such that `A^2`= 3A, then value of `|A|` is
A) `(-3)`
B) 3
C) 9
D) 27

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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII Boards-All Questions
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  9. Prove that tan^(-1) (1/4) + tan^(-1) (2/9) = 1/2 sin^(-1) (4/5)

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  13. Find the shortest distance between the lines vecr = 2hati - hatj + hat...

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  14. Find: int((tan^(3)x)/(cos^(3)x)) dx

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  15. Solve the following differential equation: (1+ e ^(y/x)) dy + e^(y...

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  16. Find f'(x) if f(x) = tan x^(tan x)

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  17. If y=e^(acos^(-1)x),-1lt=x<1, show that (1-x^2)(d^2y)/(dx^2)-x(dy)/(d...

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  18. If f(x) = sqrt ((sec x -1)/(sec x + 1)) , find f'( pi /3)

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  19. The area of the triangle formed by the vertices O, A, and B, where vec...

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