Home
Class 12
MATHS
For A=[(3,1),(-1,2)] then 14A^(-1) is gi...

For `A=[(3,1),(-1,2)]` then `14A^(-1)` is given by :

A

`14[(2,-1),(1,3)]`

B

`[(4,-2),(2,6)]`

C

`2[(2,-1),(1,-3)]`

D

`2[(-3,-1),(1,-2)]`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CBSE TERM -1 SAMPLE PAPER 1

    EDUCART PUBLICATION|Exercise SECTION - C|4 Videos

  • CBSE TERM -1 SAMPLE PAPER 1

    EDUCART PUBLICATION|Exercise SECTION - C|4 Videos

  • SAMPLE PAPER 8

    EDUCART PUBLICATION|Exercise SECTION - C|9 Videos

  • SAMPLE PAPER (SELF-ASSESSMENT) -10

    EDUCART PUBLICATION|Exercise SECTION - C|5 Videos

Similar Questions

Explore conceptually related problems

For A[(3,1),(-1,2)] , then 14 A^(-1) is given by:

If A=[(2,3),(-1,4)] , find 4 A.

If A=[[3,2],[-1,4]] then find |A^(-1)| = ?

If A=[{:(3,2),(1,4):}] then A. adj A is equal to :

If A=[[3,2],[1,4]], then A(adj A)=

If X=[(3,2),(-1,4)] , then find IXI^-1 = _______.

If A=[{:(3,2),(1,4):}] , then what is A (adj A) equal to ?

If A=[(1,-2,3),(0,-1,4),(-2,2,1)] , find (A')^(-1)

If A=[(1, 2,-1),(-1, 1, 2),( 2,-1, 1)] , then det(a d j\ (a d j\ A)) is 14^4 (b) 14^3 (c) 14^2 (d) 14

If A= [(1,1,3),(5,2,6),(-2,-1,-3)] then find A^(14)+3A-2I

EDUCART PUBLICATION-CBSE TERM -1 SAMPLE PAPER 1-SECTION - B
  1. The function f:R rarr R defined as f(x) = x^3 is:

    Text Solution

    |

  2. If x = a sec theta , y =b tan theta , then (d^2y)/(dx^2) at theta = pi...

    Text Solution

    |

  3. The derivative of sin^(-1)(2xsqrt(1-x^2)) w.r.t. sin^(-1)x,(1)/(sqrt2)...

    Text Solution

    |

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

    Text Solution

    |

  5. Find the intervals in which the function f given by f(x)=2x^3-3x^2-36 ...

    Text Solution

    |

  6. Simplest form of tan^(-1)((sqrt(1+cosx)+sqrt(1-cosx))/(sqrt(1+cosx)-sq...

    Text Solution

    |

  7. Given that A is a non-singular matrix of order 3 such that A^2 = 2A, ...

    Text Solution

    |

  8. The value of b for which the function f(x)=x+cos x+b is strictly decre...

    Text Solution

    |

  9. Let R be a relation on the set N given by R={(a ,\ b): a=b-2,\ b >6}do...

    Text Solution

    |

  10. The point(s), at which the function f given by f(x) = {{:((x),xlt0),(-...

    Text Solution

    |

  11. If A={:[(0,2),(3,-4)]:}and kA={:[(0,3a),(2b,24)]:}, then the values of...

    Text Solution

    |

  12. A linear programming problem is as follows: Minimize Z = 30x + 50y ...

    Text Solution

    |

  13. 1.The area of a trapezium is defined by function f and given by f(x) =...

    Text Solution

    |

  14. If A square matrix such that A^2 = A , then (l+A)^3 -7A is equal to :

    Text Solution

    |

  15. If tan^(-1) x =y then :

    Text Solution

    |

  16. Let A = {1, 2, 3}, B = {4, 5, 6, 7} and let f = {(1, 4), (2,5), (3, 6)...

    Text Solution

    |

  17. For A=[(3,1),(-1,2)] then 14A^(-1) is given by :

    Text Solution

    |

  18. Find the point on the curve y=x^3-11 x+5 at which the tangent is y"...

    Text Solution

    |

  19. Given that A=[(alpha, beta),(gamma, - alpha)] and A^2 =3 I then :

    Text Solution

    |

  20. For an objective function Z = ax + by, where a, bgt0, the corner poin...

    Text Solution

    |