Home
Class 12
MATHS
|[3,x],[x,1]|= |[3,2],[4,1]| then x is e...

`|[3,x],[x,1]|= |[3,2],[4,1]|` then x is equal to

A

8

B

4

C

`+-2sqrt(2)`

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2015

    KCET PREVIOUS YEAR PAPERS|Exercise MATHEMATICS|60 Videos

  • KARNATAKA CET 2018

    KCET PREVIOUS YEAR PAPERS|Exercise MATHEMATICS|60 Videos

Similar Questions

Explore conceptually related problems

If the determinant |{:(x , 1 , 3) , ( 0 , 0 , 1) , (1 , x , 4):}|=0 , then x is equal to

If {:X=[(3,-4),(1,-1)]:} , the value of X^n is equal to

If 3^x=4^(x-1) , then x equals

If f(x)=log((1+x)/(1-x))andg(x)=(3x+x^(3))/(1+3x^(2)) , then f(g(x)) is equal to :

int x^(3)/(x+1) dx is equal to

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

If f(x)=|{:(1,x,x+1),(2x,x(x-1),(x+1)x),(3x(x-1),x(x-1)(x-2),(x+1)x(x-1)):}| then f (100) is equal to :

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 f(x) = 1-x + x^(2) - x^(3) + …. - x^(99) + x^(100) , then f^(')(1) is equal to

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2017-MATHEMATICS
  1. If A and B are finite sets and A subset B, then

    Text Solution

    |

  2. If a matrix A is both symmetric and skew symmetric, then

    Text Solution

    |

  3. |[3,x],[x,1]|= |[3,2],[4,1]| then x is equal to

    Text Solution

    |

  4. Find the general solution of the differential equation x (dy)/(dx)+2y=...

    Text Solution

    |

  5. The perpendicular distance of the point P(6,7,8) from XY-plane is

    Text Solution

    |

  6. The shaded region in the figure is the solution set of the inequations

    Text Solution

    |

  7. If an LPP admits optimal solution at two consecutive vertices of a fea...

    Text Solution

    |

  8. 3 + 5 + 7 + .... to n terms is

    Text Solution

    |

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

    Text Solution

    |

  10. The derivative of cos^(-1)(2x^(2) - 1) w.r.t cos^(-1) x is

    Text Solution

    |

  11. A box has 100 pens of which 10 are defective. The probability that out...

    Text Solution

    |

  12. If y = log (log x), then (d^(2)y)/(dx^(2)) is equal to

    Text Solution

    |

  13. int ((x+3)e^(x))/((x+4)^(2)) dx is equal to

    Text Solution

    |

  14. int(0)^(pi//2)(dx)/(a^(2)cos^(2)x + b^(2) sin^(2) x) =

    Text Solution

    |

  15. Let f: R to R be defined by f(x) = x^(4), then

    Text Solution

    |

  16. The point on the curve y^(2) = x where the tangent makes an angle (pi)...

    Text Solution

    |

  17. The total number of terms in the expansion of (x + a)^(47) - (x - a)^(...

    Text Solution

    |

  18. The function f(x) = x^(2) + 2x - 5 is strictly increasing in the inter...

    Text Solution

    |

  19. The degree of the differential equation [1+ ((dy)/(dx))^(2)]^(2)= (d...

    Text Solution

    |

  20. Binary operation * on R - {-1} defined by a * b= (a)/(b+a)

    Text Solution

    |