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Given that matrix A[(x,3,2),(1,y,4),(2,2...

Given that matrix `A[(x,3,2),(1,y,4),(2,2,z)]`. If `xyz=60` and `8x+4y+3z=20`, then A(adj A) is equal to

A

`[{:(64,0,0),(0,64,0),(0,0,64):}]`

B

`[{:(88,0,0),(0,88,0),(0,0,88):}]`

C

`[{:(68,0,0),(0,68,0),(0,0,68):}]`

D

`[{:(34,0,0),(0,34,0),(0,0,34):}]`

Text Solution

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The correct Answer is:
C
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DISHA PUBLICATION-DETERMINANTS-EXERCISE -2 CONCEPT APPLICATOR
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  15. Prove that the value of each the following determinants is zero: |s...

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  18. Supposealpha ,beta , gamma in R are such that sin alpha, sin beta , s...

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  19. If Delta(x)=|[sin2x, e^x sinx+x cosx, sinx+x^2 cosx] , [cosx+sinx, e^x...

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  20. Given that matrix A[(x,3,2),(1,y,4),(2,2,z)]. If xyz=60 and 8x+4y+3z=2...

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