Home
Class 12
MATHS
If I is identify matrix of order two, th...

If I is identify matrix of order two, then 3I would be which matrix ?

Text Solution

Verified by Experts

The correct Answer is:
`[(3,0),(0,3)];` Scalar
Promotional Banner

Topper's Solved these Questions

  • MATRICES

    MODERN PUBLICATION|Exercise NCERT - FILE (Question from NCERT Book) (Exercise 3.1)|10 Videos

  • MATRICES

    MODERN PUBLICATION|Exercise NCERT - FILE (Question from NCERT Book) (Exercise 3.2)|20 Videos

  • MATRICES

    MODERN PUBLICATION|Exercise Objective Type Questions (C. True/False Questions)|4 Videos

  • LINEAR PROGRAMMING

    MODERN PUBLICATION|Exercise Chapter Test|12 Videos

  • PROBABILITY

    MODERN PUBLICATION|Exercise MOCK TEST SECTION D|6 Videos

Similar Questions

Explore conceptually related problems

If I is unit matrix of order n, then 3I will be

If I_(3) is identity matrix of order 3, then I_(3)^(-1)=

If I_3 is the identily matrix of order 3, then (I_3)^(-1)=

If I_(n) is the identity matrix of order n then (I_(n))^(-1)=

Let A be a square matrix of order 3 whose all entries are 1 and let I_(3) be the indentiy matrix of order 3. then the matrix A - 3I_(3) is

If A is a matrix of order 3xx7 and B is a matrix of order 7xx3 then what will be the order of the matrix AB and BA ?

MODERN PUBLICATION-MATRICES-Objective Type Questions (D. Very Short Answer Type Questions)
  1. If I is identify matrix of order two, then 3I would be which matrix ?

    Text Solution

    |

  2. Construct a 3 xx2matrix whose elements are given by a(i j)=1/2|i-3j|.

    Text Solution

    |

  3. Name the square matrix A=[a(ij)] in which a(ij)=0, i!=j.

    Text Solution

    |

  4. Write the element a(12) of the matrix A=[a(ij)](2xx2), whose elements ...

    Text Solution

    |

  5. Find the values of 'x' and 'y' when : [(x+2y,3y),(4x,2)]=[(0,-3),(8,...

    Text Solution

    |

  6. Write the value x-y+z from the following equation : [(x+y+z),(x+z),(...

    Text Solution

    |

  7. If 3A-B=[(5,0),(1,1)] and B=[(4,3),(2,5)] the find the matrix A.

    Text Solution

    |

  8. If A=[(2,-1),(4,2)] and B=[(2,3),(1,2)]find 2A+3B

    Text Solution

    |

  9. If A=[(2,-1),(4,2)],B=[(4,3),(-2,1)],C=[(-2,-3),(-1,-2)], find the val...

    Text Solution

    |

  10. Does the sum [(5,3,2),(2,5,3),(5,2,3)]+[(0,0,0),(0,0,0)] make sense ? ...

    Text Solution

    |

  11. If 3A-B=[(5,0),(1,1)] and B=[(4,3),(2,5)], then find the matrix A.

    Text Solution

    |

  12. Find 'x' and 'y' if 2[(X,5),(3,y)]=[(4,10),(6,6)].

    Text Solution

    |

  13. From the equation : 2((1,3),(0,x))+((y,0),(1,2))=((5,6),(1,8)) find ...

    Text Solution

    |

  14. From the equation : 2((1,3),(0,x))+((y,0),(1,2))=((5,6),(1,8)) find ...

    Text Solution

    |

  15. Write the order of the product matrix : [(1),(2),(3)]["2 3 4"]

    Text Solution

    |

  16. Compute : [(1,0),(0,1)][(2,-1),(1,2)]

    Text Solution

    |

  17. Compute : [(1,0),(1,0)][(0,0),(1,0)]

    Text Solution

    |

  18. Compute : [(4),(2),(3)]["1 0 2"]

    Text Solution

    |

  19. Compute : ["1 2 3 4"][(1),(2),(3),(4)].

    Text Solution

    |

  20. For the symmetric matrix, A=[(2,x,4),(5,3,8),(4,y,9)] find the values ...

    Text Solution

    |