Home
Class 12
MATHS
If A and B are two matrices such that AB...

If A and B are two matrices such that AB=B and BA=A , then `A^2+B^2=`

A

`A^(2)+B^(2)`

B

`O`

C

`A^(2)+2AB+B^(2)`

D

`A+B`

Text Solution

AI Generated Solution

To solve the problem, we need to find \( A^2 + B^2 \) given that \( AB = B \) and \( BA = A \). ### Step-by-Step Solution: 1. **Start with the expression for \( A^2 \)**: \[ A^2 = A \cdot A \] ...
Promotional Banner

Topper's Solved these Questions

  • ADJOINTS AND INVERSE OF MATRIX

    RD SHARMA ENGLISH|Exercise All Questions|181 Videos
  • ALGEBRA OF VECTORS

    RD SHARMA ENGLISH|Exercise All Questions|325 Videos

Similar Questions

Explore conceptually related problems

Statement -1 (Assertion) and Statement - 2 (Reason) Each of these examples also has four alternative choices, ONLY ONE of which is the correct answer. You have to select the correct choice as given below Statement-1 If A and B are two matrices such that AB = B, BA = A, then A^(2) + B^(2) = A+B. Statement-2 A and B are idempotent motrices, then A^(2) = A, B^(2) = B .

If A and B are two matrices such that A B=A and B A=B , then B^2 is equal to (a) B (b) A (c) 1 (d) 0

If A and B are two matrices such that AB=A, BA=B, then A^25 is equal to (A) A^-1 (B) A (C) B^-1 (D) B

If A and B are two matrices such that A+B and AB are both defind, then

If A and B are two square matrices such that B=-A^(-1)BA , then (A+B)^(2) is equal to

Show that , if A and B are square matrices such that AB=BA, then (A+B)^(2)=A^(2)+2AB+B^(2) .

If A and B are any two 2 xx 2 matrices such that AB=BA=B and B is not a zero matrix, what can you say about the matrix A ?

if A and B are two matrices of order 3xx3 so that AB=A and BA=B then (A+B)^7=

If A and B are two matrices of order 3 such that AB=O and A^(2)+B=I , then tr. (A^(2)+B^(2)) is equal to ________.

Let A and B are two matrices such that AB = BA, then for every n in N

RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
  1. If A and B are two matrices such that A B=A and B A=B , then B^...

    Text Solution

    |

  2. If A B=A and B A=B , where A and B are square matrices, then B^2=B ...

    Text Solution

    |

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

    Text Solution

    |

  4. If [(cos\ (2pi)/7,-sin\ (2pi)/7),(sin\ (2pi)/7,cos\ (2pi)/7)]^k=[(1,0)...

    Text Solution

    |

  5. If the matrix A B is zero, then It is not necessary that either A=O...

    Text Solution

    |

  6. Let A=[(a,0, 0),( 0,a,0),( 0, 0,a)] , then A^n is equal to [(a^n,0,...

    Text Solution

    |

  7. If A ,\ B are square matrices of order 3,\ A is non-singular and A ...

    Text Solution

    |

  8. If A=[(n,0 ,0),( 0,n,0),( 0, 0,n)] and B=[(a1,a2,a3),(b1,b2,b3),(c1,c2...

    Text Solution

    |

  9. If A=[(1,a),(0, 1)] , then A^n (where n in N) equals (a)[(1,n a),(0, ...

    Text Solution

    |

  10. If A=[[1, 2, x], [0 ,1 ,0],[ 0, 0, 1]] and B=[[1,-2,y],[0, 1, 0 ],[0...

    Text Solution

    |

  11. If A=[1-1 2-1] , B=[a1b-1] and (A+B)^2=A^2+B^2 , then values of a and ...

    Text Solution

    |

  12. If A=[alphabetagamma-alpha] is such that A^2=I , then 1+alpha^2+betaga...

    Text Solution

    |

  13. If S=[S(i j)] is a scalar matrix such that s(i i)=ka n dA is a square ...

    Text Solution

    |

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

    Text Solution

    |

  15. If a matrix A is both symmetric and skew-symmetric, then A is a dia...

    Text Solution

    |

  16. The matrix [(0, 5,-7),(-5, 0, 11),( 7,-11, 0)] is (a) a skew-symmetr...

    Text Solution

    |

  17. If A is a square matrix, then A A is a (a) skew-symmetric matrix (b)...

    Text Solution

    |

  18. If A and B are symmetric matrices, then A B A is (a) symmetric m...

    Text Solution

    |

  19. If A=[(5,x),( y,0)] and A=A^T , then a) x=0,\ \ y=5 (b) x+y=5 (c)...

    Text Solution

    |

  20. If A is 3xx4 matrix and B is a matrix such that A^T B and B A^T are bo...

    Text Solution

    |