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Show that A B!=B A in each of the foll...

Show that `A B!=B A` in each of the following cases: `A=[[1, 3,-1],[2,-1,-1],[3, 0,-1]]` and `B=[[-2, 3,-1],[-1, 2,-1],[-6, 9,-4]]` (ii) `A=[[10,-4,-1],[-1,1, 5],[0, 9,51]]` and `B=[[1, 2, 1],[ 3, 4, 2],[ 1, 3, 2]]`

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RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
  1. Compute the products A B and B A whichever exists in each of the fol...

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  2. Compute the products A B and B A whichever exists in each of the fol...

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  3. Show that A B!=B A in each of the following cases: A=[[1, 3,-1],[2,-...

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  4. Evaluate the following: ([(1,3),( -1,-4))]+[(3 ,-2 ),(-1 ,1)])[(1 ,3,5...

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  5. If A=[[1, 0],[ 0, 1]] , B=[[1,0],[0,-1]] and C=[[0, 1],[ 1, 0]] , then...

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  6. If A=[[2,-1],[ 3, 2]] and B=[[0, 4],[-1, 7]] , find 3A^2-2B+I .

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  7. If A=[[4, 2],[-1, 1]] , prove that (A-2I)(A-3I)=O .

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  8. If A=[(1,1),(0,1)] , show that A^2=[(1, 2),( 0, 1)] and A^3=[(1 ,3 ),(...

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  9. If A=[(ab ,b^2) ,(-a^2 ,-ab)] , show that A^2=O .

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  10. If A=[cos2thetasin2theta-sin2thetacos2theta] , find A^2 .

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  11. If A=[(2 ,-3, -5), (-1, 4, 5),( 1, -3 ,-4)] and B=[(-1, 3, 5), (1,-3, ...

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  12. If A=[[0 ,c,-b],[-c, 0, a],[ b, -a, 0]] and B=[[a^2, ab, ac],[ ab, ...

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  13. If A=[(2, -3, -5) , (-1, 4, 5), (1, -3, -4)] and B=[(2, -2, -4) , (-1,...

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  14. Let A=[(-1 ,1,-1),(3,-3 ,3),( 5, 5, 5)] and B=[(0 ,4 ,3 ),(1,-3,-3),(-...

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  15. For the following matrices verify the associativity of matrix multip...

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  16. For the following matrices verify the distributivity of matrix multi...

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  17. If A=[1 0-2 3-1 0-2 1 1] , B=[0 5-4-2 1 3-1 0 2] and C=[1 5 2-1 1 0 0-...

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  18. Compute the elements a(43) and a(22) of the matrix: A=[[0, 1, 0],[ 2, ...

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  19. If A =[{:(0,1,0),(0,0,1),(p,q,r):}], show that ltbargt A^(3)= pI+qA+rA...

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  20. If omega is a complex cube root of unity, show that ([[1,omega,omega...

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