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If A-2B=[(1,2),(3,0)] and 2A-3B=[(-3,3),...

If `A-2B=[(1,2),(3,0)]` and `2A-3B=[(-3,3),(1,-1)]` then `B=`

A

`[(-5,7),(-5,1)]`

B

`[(5,7),(-5,1)]`

C

`[(-5,-1),(-5,-1)]`

D

`[(-5,-7),(-5,1)]`

Text Solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-MATRICES-EXERCISE 1A MCQ (ALGEBRA OF MATRICES)
  1. If [(1,2,3),(3,2,1)]+X=[(4,4,4),(4,4,4)] then X=

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  2. If A+B=[(2,3,1),(6,-1,5)],A-B=[(2,1,-1),(0,-1,3)] then B=

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  3. If A-2B=[(1,2),(3,0)] and 2A-3B=[(-3,3),(1,-1)] then B=

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  4. If [(4,9),(3,0)]=[(x,y^(2)),(3,0)] then (x,y)=

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  5. If [[x-3,2y-8],[z+2,6]] = [(5,2),(-2,a-4)] then find x,y,z & a.

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  6. If A=[(0,2),(3,-4)],kA=[(0,3a),(2b,24)] then the values of k,a,b are r...

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  7. If [{:(x-1," "2,5-y),(" "0,z-1,7),(" "1," "0,a-5):}]=[{:(1,2,3),(0,4,7...

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  8. The order of the matrix A is 3xx5 and that of B is 2xx3. The order of ...

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  9. If [(1,2,3)]B=[(3,4)] then the order of the matrix B is

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  10. m[(-3,4)]+n[(4,-3)]=[(10,-11)]implies3m+7n=

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  11. If A=[(4,2),(-1,1)] then A^(2)=

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  12. If A=[(ab,b^(2)),(-a^(2),-ab)] then A^(2)=

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  13. If A=[(1,-3,-4),(-1,3,4),(1,-3,-4)] then A^(2)=

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  14. If A=[(a^(2),ab,ac),(ab,b^(2),bc),(ac,bc,c^(2))] and a^(2)+b^(2)+c^(2)...

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  15. If A=[(2,3),(4,-1)],B=[(1,-2),(-1,3)] then A^(2)-B^(2)=

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  16. A=[(-1,0),(0,2)]impliesA^(3)-A^(2)=

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  17. A=[(i,-i),(-i,i)],B=[(1,-1),(-1,1)]impliesA^(8)=

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  18. If A=[(a,b),(b,a)] and A^(2)=[(alpha, beta),(beta, alpha)] then

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  19. If A=[(2,1),(1,3)],B=[(3,2,0),(1,0,4)] then AB=

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  20. If A=[(1,-1),(3,4),(-1,5)],B=[(-1,2),(3,1)] then AB=

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