Home
Class 12
MATHS
If (1 x 2)[[1,2,3],[0,1,5],[0,2,3]] [[x]...

If `(1 x 2)[[1,2,3],[0,1,5],[0,2,3]] [[x],[-1],[2]]=0` then `x=`

A

`(6)/(5)`

B

`-(6)/(5)`

C

`(5)/(6)`

D

`-(5)/(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MATHEMATICAL REASONING

    HIMALAYA PUBLICATION|Exercise Question Bank|97 Videos

  • MAXIMA AND MINIMA

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|167 Videos

Similar Questions

Explore conceptually related problems

The value of x so that [[1,x,1]][[1,3,2] , [0,5,1] , [0,3,2]][[1], [1], [x]]=0 is

If 2[[1,3],[0,x]]+ [[y,0],[1,2]]= [[5,6],[1,8]] , then the value of x and y are

If |[1,2,3],[2,x,3],[3,4,5]|=0 then x =

Let X= [[x_1],[x_2],[x_3]], A= [[1,-1,2],[2,0,1],[3,2,1]] and B= [[3],[1],[4]] and if A X=B , then X .

If [[x, y^3],[2,0]]=[[1,8],[2,0]] then [[x,y],[2,0]]^-1=

If |[ x+1 ,2 ,3],[1 , x+2,3],[1, 2, x+3]|=0 , then x=0 and

If A= [[x,1],[1,0]] and A^2=I then x=

If x ne 0 and |[1,x,2x],[1,3x,5x],[1,3,4]|=0 then x=

If A= [[0,-2,3],[2,0,-1],[-3,1,0]] then A^5 is

HIMALAYA PUBLICATION-MATRICES AND DETERMINANTS-QUESTION BANK
  1. If A=[[a,0,0],[0,a,0],[0,0,a]] then |adj A|=

    Text Solution

    |

  2. For a 3xx 3 matrix A, if det A=3, then det (adj A)=

    Text Solution

    |

  3. If (1 x 2)[[1,2,3],[0,1,5],[0,2,3]] [[x],[-1],[2]]=0 then x=

    Text Solution

    |

  4. If A and B are two matrices such that A B=B and B A=A, then A^2+B^2=

    Text Solution

    |

  5. If A=[[3,-4],[1,-1]] then the value of A^n=

    Text Solution

    |

  6. If A is a square matrix of order n, then det (adj A)=

    Text Solution

    |

  7. For any 2xx 2 matrix A, if A . adj A = [[7,0],[0,7]] then |A| is equal...

    Text Solution

    |

  8. If A=[[1,-1,2],[2,1,-1],[-1,2,1]], then det [adj .(adj A)]=

    Text Solution

    |

  9. If A = [[1,0,0],[0,1,0],[0,0,1]], then A^2+2 A=

    Text Solution

    |

  10. If A = [[0,c,-b],[-c,0,a],[b,-a,0]] and B = [[a^(2),ab,ac],[ab,b^2,bc]...

    Text Solution

    |

  11. If the matrix A B is a zero matrix, then

    Text Solution

    |

  12. If A B=A and B A=B, then B^2=

    Text Solution

    |

  13. If A = [(1,1),(1,1)] and n in N , then A^(n) equals :

    Text Solution

    |

  14. If A= [[i,0],[0,i]], n in N, then A^(4 n) =

    Text Solution

    |

  15. If A be a square matrix of order 3. If |A|=-2 then the value of the de...

    Text Solution

    |

  16. If A = [[0,-i,1],[0,2,-3],[2,1,0]] and B=adj A, C=5A, then |ad j B|/|...

    Text Solution

    |

  17. If A = [[a,0,0],[0,a,0],[0,0,a]] then |adj A|=

    Text Solution

    |

  18. The inverse of a symmetric matrix is

    Text Solution

    |

  19. Let X = [[x1],[x2],[x3]], A= [[1,-1,2],[2,0,1],[3,2,1]] and B= [[3],[...

    Text Solution

    |

  20. If A is a 3xx 3 non-singular matrix such that A=A^-1 and |A| ne 1, the...

    Text Solution

    |