Home
Class 12
MATHS
Let A=[{:(1,2),(-1,3):}],B=[{:(4,0),(1,5...

Let `A=[{:(1,2),(-1,3):}],B=[{:(4,0),(1,5):}],C=[{:(2,0),(1,-2):}]and a=4, b =-2` shows that :
(i) `A+(B+C)=(A+B)+C`
(ii) `A*(BC)=(AB)*C`
(iii) `(a+b)B=a*B+b*B`
(iv) `a(C-A)=aC-aA`
(v) `(A^(T))^(T)=A`
(vi) `(b*A)^(T)=B^(T)=b*A^(T)`
(vii) `(A*B)^(T)=B^(T)*A^(T)`
(viii) `(A-B)*C=AC-BC`
(ix) `(A-B)^(T)=A^(T)-B^(T)`

Text Solution

Verified by Experts

The correct Answer is:
(i) `=(A+B)+C`
(ii) `=(AB)*C`
`=aB+bB`
(iv) `=a*C-a*A`
(v) `=A`
(vi) `=bA^(T)`
(vii) `=B^(T)*A^(T)`
(viii) `=AC-BC`
(ix) `=A^(T)-B^(T)`
Promotional Banner

Topper's Solved these Questions

  • MATRICES

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Long Answer Type Questions)|4 Videos
  • MATRICES

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Objective type Questions)|15 Videos
  • MATRICES

    KUMAR PRAKASHAN|Exercise TEXTBOOK ILLUSTRATIONS FOR PRACTICE WORK |28 Videos
  • LINEAR PROGRAMMING

    KUMAR PRAKASHAN|Exercise PRACTICE WORK|25 Videos
  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Practice Paper - 13 (Section - D (Answer the following questions))|2 Videos

Similar Questions

Explore conceptually related problems

If A=[{:(1,2),(-2,1):}],B=[{:(2,3),(3,-4):}]andC=[{:(1,0),(-1,0):}] verify (i) (A*B)*C=A*(BC) (ii) A*(B+C)=AB+AC

Let A=[{:(2,-1),(4,2):}]B=[{:(4,3),(-2,1):}]andC=[{:(-2,-3),(-1,2):]] Find the following (1) 2B+3C,(2)A+(B+C),(3)(2A-3B)-Cand4)(B+C)-2A.

If A=[{:(1,2,-3),(5,0,2),(1,-1,1):}],B=[{:(3,-1,2),(4,2,5),(2,0,3):}]andC=[{:(4,1,2),(0,3,2),(1,-2,3):}] , then compute (A+B) and (B-C).Also , verify that A+(B-C) =(A+B)-C.

If A=[{:(0,6,7),(-6,0,8),(7,-8,0):}],B=[{:(0,1,1),(1,0,2),(1,2,0):}],C=[{:(2,),(-2,),(3,):}] . Calculate AC, BC and (A+B)C. Also , verify that (A+B)C=AC+BC.

If A=[(5a,-b),(3,2)] and A*adjA="A"A^T , then 5a+b is equal to: (1) -1 (2) . 5 (3). 4 (4). 13

If A={3,6,9,12,15,18,21}, B={4,8,12,16,20} C={2,4,6,8,12,14,16} and D={5,10,15,20}, find (i) A-B (ii) A-C (iii) A-D (iv) B-A (v) C-A (vi) D-A (vii) B-C (viii) B-D (ix) C-B (x) D-B

|{:(a,-b,a-b),(b,c,b-c),(2,1,0):}|=0 then a,b,c are in …………..

KUMAR PRAKASHAN-MATRICES -Solutions of NCERT Exemplar Problems (Short Answer Type Questions)
  1. Show that A'A and A A ' are both symmetric matrices for any matrix A .

    Text Solution

    |

  2. Let A and B be square matrices of the order 3xx3 . Is (AB)^(2)=A^(2)B^...

    Text Solution

    |

  3. Show that if A and B are square matrics such that AB=BA , then (A+B)^(...

    Text Solution

    |

  4. Let A=[{:(1,2),(-1,3):}],B=[{:(4,0),(1,5):}],C=[{:(2,0),(1,-2):}]and a...

    Text Solution

    |

  5. If A=[{:(cosq,sinq),(-sinq,cosq):}] , then show that A^(2)=[{:(cos(2q...

    Text Solution

    |

  6. If A=[{:(0,-x),(x,0):}],B=[{:(0,1),(1,0):}]andx^(2)=-1 then show that ...

    Text Solution

    |

  7. Verify that A^(2)=I when A=[{:(0,1,-1),(4,-3,4),(3,-3,4):}].

    Text Solution

    |

  8. Prove by Mathematical Induction that (A)^(n)=(A^(n)) where n inN for a...

    Text Solution

    |

  9. Find inverse , by elementary row operations (if possible), of the foll...

    Text Solution

    |

  10. If [{:(xy,4),(z+6,x+y):}]=[{:(8,w),(0,6):}] , then find values of x,y,...

    Text Solution

    |

  11. If A=[{:(1,5),(7,12):}],B=[{:(9,1),(7,8):}] find a matrix C such that ...

    Text Solution

    |

  12. If A=[{:(3,-5),(-4,2):}], then find A^(2)-5A-14I. Hence , obtain A^(3)...

    Text Solution

    |

  13. Find the values of a,b ,c and d, if 3[{:(a,b),(c,d):}]=[{:(a,6),(-1,...

    Text Solution

    |

  14. Find the matrix X such that , [{:(2,-1),(1,0),(-3,4):}]X=[{:(-1,-8...

    Text Solution

    |

  15. If A=[{:(1,2),(4,1):}], find A^(2)+2A+7I.

    Text Solution

    |

  16. If A=[{:(cosalpha,sinalpha),(-sinalpha,cosalpha):}],andA^(-1)=A', find...

    Text Solution

    |

  17. If the maxtrix [{:(0,a,3),(2,b,-1),(c,1,0):}] is a skew symmetric mat...

    Text Solution

    |

  18. If p(x)=[{:(cosx,sinx),(-sinx,cosx):}] then show that p(x)*p(y)=p(x+y)...

    Text Solution

    |

  19. If A is square matrix such that A^(2)=A, show that (I+A)^(3)=7A+I.

    Text Solution

    |

  20. If A,B are square matrices of same order and B is a skew -symmetric ma...

    Text Solution

    |