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If A=|{:(,2,-3),(,-4,1):}| then adj (3A^...

If `A=|{:(,2,-3),(,-4,1):}|` then adj `(3A^(2)+12A)` is equal to

A

`[(51,63),(84,72)]`

B

`[(51,84),(63,72)]`

C

`[(72,-63),(-84,51)]`

D

`[(72,-84),(-63,51)]`

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VMC MODULES ENGLISH-MATRICES AND DETERMINANTS -JEE MAIN ARCHIVE
  1. Suppose A is any 3 × 3 non-singular matrix and (A -3I) (A-5I)=0, wher...

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  2. Let A=[(1,0,0),(1,1,0),(1,1,1)] and B=A^20 . Then the sum of the elem...

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  3. If A=|{:(,2,-3),(,-4,1):}| then adj (3A^(2)+12A) is equal to

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  4. If S is the set of distinct values of 'b' for which the following ...

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  5. If s={x in [0,2pi]:|[0,cosx,-sinx],[sinx,0,cosx],[cosx,sinx,0]|=0} the...

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  6. The number of real values of for which the system of linear equation...

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  7. Let A be any 3xx3 invertible matrix. Thenwhich one of the following i...

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  8. For two 3xx3 matrices A and B, let A+B=2B' and 3A+2B=I3 where B' is t...

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  9. If A=|{:(,5a,-b),(,3,2):}| and A adj A=A A^(T), then 5a+b is equal to

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  10. The system of linear equations x+lambday-z=0, lambdax-y-z=0, x+y-lam...

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  11. The number of distinct real roots of |(sinx, cosx, cosx),(cos x,sin x,...

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  12. about to only mathematics

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  13. Let A be a 3xx3 matrix such that A^2-5A+7I=0 then which of the stateme...

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  14. If {:A=[(-4,-1),(3,1)]:}, then the determint of the matrix (A^2016-2A^...

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  15. The set of all values of lambda for which the system of linear equ...

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  16. if A=[(1,2,3),(2,1,-1),(a,2,b)] is a matrix satisfying A A'=9l(3,) fin...

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  17. if the value of the determinant |{:(a,,1,,1),(1,,b,,1),(1,,1,,c):}| ...

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  18. If A=[(0,-1),(1,0)] , then which one of the following statements is n...

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  19. If A is a 3 x 3 matrix such that |5-adjA|=5 , then |A| is equal to ...

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  20. If |(x^2+x,x+1,x-2),(2x^2+3x-1,3x,3x-3),(x^2+2x+3,2x-1,2x-1)|=ax-12 t...

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