Home
Class 11
MATHS
The trace of the matrix A=[1-5 7 0 7 ...

The trace of the matrix `A=[1-5 7 0 7 9 11 8 9]` is (a) 17 (b) 25 (c) 3 (d) 12

A

17

B

25

C

3

D

12

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MATRICES

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|30 Videos

  • MATRICES

    OBJECTIVE RD SHARMA ENGLISH|Exercise Section I - Assertion Reason Type|12 Videos

  • LOGARITHMS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|21 Videos

  • MEAN VALUE THEOREMS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Exercise|28 Videos

Similar Questions

Explore conceptually related problems

The smallest of the fractions 2/3,4/7,8/(11) and 5/9 is (a) 2/3 (b) 4/7 (c) 8/(11) (d) 5/9

If the arithmetic mean of 7,\ 8,\ x ,\ 11 ,\ 14 is x , then x= (a) 9 (b) 9.5 (c) 10 (d) 10.5

Median of the observatios 5, 7, 14, 12, 15, 17, 17, 5, 14, 7, 5 is a) 14 b)12 c)11.8 d) 7

The inter - quartile range of the data 1, 3, 5, 7, 9, 11, 13, 15, 17, 19

If a digit is chosen at random from the digits 1,\ 2,\ 3,\ 4,\ 5,\ 6,\ 7,\ 8,\ 9 , then the probability that the digit is even, is (a) 4/9 (b) 5/9 (c) 1/9 (d) 2/3

If the mean of and 7 is 7, then 6 (b) 7 8 (d) 9

If a digit is chosen at random from the digits 1,\ 2,\ 3,\ 4,\ 5,\ 6,\ 7,\ 8,\ 9 , then the probability that it is odd, is (a) 4/9 (b) 5/9 (c) 1/9 (d) 2/3

If (5+9+13+\ ddotto\ n\ t e r m s)/(7+9+11+\ ddotto\ (n+1)t e r m s)=(17)/(16) , then n= (a) 8 (b) 7 (c) 10 (d) 11

The difference between the greatest and the least fractions out of 6/7,7/8,8/9\ a n d 9/(10) is? (a)  3/(70) (b) 1/(56) (c) 1/(40) (d) 1/(72)

OBJECTIVE RD SHARMA ENGLISH-MATRICES-Exercise
  1. If A and B are symmetric matrices of the same order, write whether ...

    Text Solution

    |

  2. If A and B are square matrices of the same order such that A B=B A ...

    Text Solution

    |

  3. The trace of the matrix A=[1-5 7 0 7 9 11 8 9] is (a) 17 (b) 25 ...

    Text Solution

    |

  4. If A is a skew- symmetric matrix, then trace of A is: 1.) 1 2.) -...

    Text Solution

    |

  5. If {:A=[(1,x),(x^7,4y)],B=[(-3,1),(1,0)]and adjA+B=[(1,0),(0,1)]:}, th...

    Text Solution

    |

  6. If A is a square matrix of order n xx n and k is a scalar, then adj (k...

    Text Solution

    |

  7. If A is a singular amtrix, then adj A is

    Text Solution

    |

  8. If A is a non singular square matrix; then adj(adjA) = |A|^(n-2) A

    Text Solution

    |

  9. If A is a singular amtrix, then adj A is

    Text Solution

    |

  10. If A=[(cosx,sinx),(-sinx,cosx)] and A.(adjA)=k[(1,0),(0,1)] then the v...

    Text Solution

    |

  11. If A=[[1,1],[1,1]] ,prove that A^n=[[2^(n-1),2^(n-1)],[2^(n-1),2^(n-1)...

    Text Solution

    |

  12. If A=[{:(a,b),(b,a):}] and A^(2)=[{:(alpha, beta),(beta, alpha):}] the...

    Text Solution

    |

  13. If A is an invertible square matrix; then adj A^T = (adjA)^T

    Text Solution

    |

  14. If A=[[1,3] , [3,4]] and A^2-kA-5I2=0 then k=

    Text Solution

    |

  15. If A=[a(ij)] is a scalar matrix, then trace of A is

    Text Solution

    |

  16. If A=[a(i j)] is a scalar matrix of order nxxn such that a(i i)=k f...

    Text Solution

    |

  17. If A=[a(i j)] is a scalar matrix of order nxxn such that a(i i)=k f...

    Text Solution

    |

  18. If A=[a(ij)] is a scalar matrix of order nxxn and k is a scalar, then ...

    Text Solution

    |

  19. If f(alpha)=[[cosalpha,-sinalpha,0],[sinalpha,cosalpha,0],[ 0, 0, 1]],...

    Text Solution

    |

  20. If F(x)=[("cos"x,-sin x,0),(sin x,cos x,0),(0,0,1)] and G(y)=[(cos y,0...

    Text Solution

    |