Home
Class 12
MATHS
If A=[{:(6,8,5),(4,2,3),(9,7,1):}]then B...

If `A=[{:(6,8,5),(4,2,3),(9,7,1):}]then B =(A+A')/(2)` is

A

`[{:(6,6,7),(6,2,5),(7,5,1):}]`

B

`[{:(0,2,-2),(-2,5,-2),(2,2,0):}]`

C

`[{:(6,6,7),(-6,2,-5),(-7,5,1):}]`

D

`[{:(0,6,-2),(2,0,-0),(-2,-2,0):}]`

Text Solution

Verified by Experts

The correct Answer is:
A
`B=(A+A')/(2)`
`B=1/2{[{:(6,8,5),(4,2,3),(9,7,1):}]+[{:(6,4,9),(8,2,7),(5,3,1):}]}`
`=[{:(6,6,7),(6,2,5),(7,5,1):}]`
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET 17

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MATHEMATICS|50 Videos

  • PRACTICE SET 19

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise Paper 2 (Mathematics)|50 Videos

Similar Questions

Explore conceptually related problems

If A = {1,2,3……..9} , B = {2,4,6,7,8} and C = {3,4,5,8,9,10} then (A - B) uu C is .

If A=[(3,9,0),(1,8,-2),(7,5,4)], B=[(4,0,2),(7,1,4),(2,2,6)] , verify that 3(A+B)=3A+3B .

The order of the matrices [{:(1,2,3),(4,5,-1):}], [{:(2,4),(9,2),(6,3),(4,1):}] , [{:(4,5,6),(3,2,1),(9,8,7):}] respectively are :

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 18-PAPER 2 (MATHEMATICS)
  1. The radius of a cylinder is increasing at the rate of 3ms^(-1) and its...

    Text Solution

    |

  2. The probability that A speaks truth is (4)/(5), while this probability...

    Text Solution

    |

  3. If A=[{:(6,8,5),(4,2,3),(9,7,1):}]then B =(A+A')/(2) is

    Text Solution

    |

  4. If bar a,bar b and bar c are perpendicular ,bar c+bar a, bar b+bar c ...

    Text Solution

    |

  5. The angle between the lines x^(2)+4xy+y^(2)=0 is

    Text Solution

    |

  6. Let f(x) be given that f(x)={{:(,x,"if x is rational"),(,1-x,"if x is ...

    Text Solution

    |

  7. If in the figure shown A=1 and B=0, then oupput will be

    Text Solution

    |

  8. If vec a , vec b ,a n d vec c be non-zero vectors such that no tow...

    Text Solution

    |

  9. Area of the region bounded by the curve y={{:(x^(2)",",x lt0),(x",",...

    Text Solution

    |

  10. The critical points of the function f(x)=2sin ^(2)((x)/(6))+sin((x)/...

    Text Solution

    |

  11. int (2)^(3){x} dx is equal to (where {.} denotes, fractional part of ...

    Text Solution

    |

  12. Let vecV=2hati+hatj-hatk and vecW=hati+3hatk. It vecU is a unit vector...

    Text Solution

    |

  13. lim(x to oo) (1-(4)/(x-1))^(3x-1) is equal to

    Text Solution

    |

  14. The middle point of chord x+3y=2 of the conic x^(2)+xy-y^(2)=1, is

    Text Solution

    |

  15. If the sum of n terms of an A.P is 2n + 3n^2 , find the r^(th) term

    Text Solution

    |

  16. Find the value of (320(32)^(1//6)(32)^(1//36)oodot

    Text Solution

    |

  17. Let S={1,,2,34} . The total number of unordered pairs of disjoint s...

    Text Solution

    |

  18. If n(A)=4" and "n(B)=6. Then, the number of one-one function from A to...

    Text Solution

    |

  19. Let f(x) = (x^2 - 1)^(n+1) + (x^2 + x + 1). Then f(x) has local extrem...

    Text Solution

    |

  20. Find the differential equation of all parabolas whose axes are paralle...

    Text Solution

    |