Home
Class 12
MATHS
What must be the matrix X , is 2X+[[1,2]...

What must be the matrix X , is `2X+[[1,2],[3,4]]=[[3,8],[7,2]]?`

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
`2X+[[1,2],[3,4]]=[[3,8],[7,2]]`
`rArr 2X=[[3,8],[7,2]]=[[1,2],[3,4]]`
`=[[2,6],[4,-2]]`
`X=[[1,3],[2,-1]]`
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET 01

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

  • PRACTICE SET 03

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 2 (MATHEMATICS)|49 Videos

Similar Questions

Explore conceptually related problems

What must be the matrix X if 2X + [(1,2),(3,4)] = [(3,8),(7,2)] ?

Find the matrix X so that X[[1,2,34,5,6]]=[[-7,-8,-92,4,6]]

(D) Find the rank of the matrix A= [[1,2,3,0],[2,4,3,2],[3,2,1,3],[6,8,7,5]]

Find the rank of the matrix [[1,2,3,0],[2,4,3,2],[3,2,1,3],[6,8,7,5]]

For what value of x the matrix A=[[1,-2,3],[1,2,1],[x,2,-3]] is singular?

The value of x such that the matrix [[1,3,2],[2,5,x],[4,7-x,-6]] has no inverse is

If   2x + [[ 1 , 2 ],[ 3 , 4 ]] = [[ 3 , 8 ],[ 7 , 2 ]] , then x =

" The number of values of "x in[-4,-1]" ,for which the matrix "[[3,-1+x,2],[3,-1,x+2],[x+3,-1,2]]" is singular,is "

Find a matrix X of order 3xx2 such that 2A+3X=58B , where A=[[8,0],[4,-2],[3,6]], B=[[2,-2],[4,2],[-5,1]]

If A=[[1,2],[3,4]] , B=[[3,8],[7,2]] and 2X+A=B then find X

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 02-Paper 2 (Mathematics )
  1. intsqrt(1+sin((x)/(4)))dx is equal to

    Text Solution

    |

  2. The angle between two planes x+2y+2z=3 and -5x+3y+4z=9 is

    Text Solution

    |

  3. What must be the matrix X , is 2X+[[1,2],[3,4]]=[[3,8],[7,2]]?

    Text Solution

    |

  4. Let truth values of p be F and q be T. then , truth vlaue of ~(~p v q...

    Text Solution

    |

  5. (d)/(dx)[sin^(-1)(xsqrt(1 - x)- sqrt(x)sqrt(1 - x^(2)))] is equal to

    Text Solution

    |

  6. A vertex of common graph of inequalities 2x+y ge 2 and x-y le 3 , is

    Text Solution

    |

  7. The derivative of sin^2x with respect to cos^2x is equal to....

    Text Solution

    |

  8. If A xx(BxxC)=Bxx(CxxA) and [ABC] = 0, then A xx(BxxC) is equal to

    Text Solution

    |

  9. int cos (loge x)dx is equal to

    Text Solution

    |

  10. The switching function ffor switching network is

    Text Solution

    |

  11. The difference of the slopes of the lines given by the equation x^2(se...

    Text Solution

    |

  12. Let p ^^ (q vv r)=(p ^^ q) vv(p ^^ r). Then this law is known as

    Text Solution

    |

  13. If |a|=|b|=1 and |a+b|=sqrt(3), then the value of (3a-4b)(2b+5b) is

    Text Solution

    |

  14. A particle moves in a straight line so that s=sqrt(t), then its accele...

    Text Solution

    |

  15. Le t f(x) ={{:((sinpix)/(5x)",",xne0),(" "k",",x=0):} if (x) is contin...

    Text Solution

    |

  16. lim(xto0)(loge(1+x))/(3^x-1) is equal to

    Text Solution

    |

  17. The differential equation for which sin^(-1) x + sin^(-1) y = c is giv...

    Text Solution

    |

  18. The probability that in a family of 5 members,exactly two members have...

    Text Solution

    |

  19. The solution of y'-y = 1 , y(0)=-1 is given by y(x) =

    Text Solution

    |

  20. There is a group of 265 persons who like either singing or dancing or ...

    Text Solution

    |