Home
Class 12
MATHS
Without expanding or evaluating show tha...

Without expanding or evaluating show that `|[0 , b-a , c-a] , [a-b , 0 , c-b] , [a-c , b-c , 0]|=0`

Text Solution

Verified by Experts

Given
`D=|[0 , b-a , c-a] , [a-b , 0 , c-b] , [a-c , b-c , 0]|`
`D=|[0 , a-b , a-c] , [b-a, 0 , b-c] , [c-a , c-b , 0]|=-D`
Thus it is an skew-symmetric matrix
And we know determinant of a skew-symmetric matrix of odd order is zero
...
Promotional Banner

Topper's Solved these Questions

  • DERIVATIVES AS A RATE MEASURER

    RD SHARMA|Exercise Solved Examples And Exercises|149 Videos
  • DIFFERENTIABILITY

    RD SHARMA|Exercise Solved Examples And Exercises|136 Videos

Similar Questions

Explore conceptually related problems

Without expanding or evaluating show that |0b-ac-aa-b0c-ba-cb-c0|=0

Without expanding the determinant prove that: |0b-c-b0a c-a0|=0

Show that det[[0,b-a,c-aa-b,0,c-ba-c,b-c,0]]=0

Show without expanding at any stage that: [0,a,-b],[-a,0,-c],[b,c,0]|=0

Without expanding show that |[b^2c^2,b c, b+c],[c^2a^2,c a ,c+a ],[a^2b^2,a b ,a+b]|=0

Show without expanding at any stage that: [1/a, a^2, bc],[1/b, b^2, ca],[1/c, c^2, ab]|=0

Using the property of determinants and without expanding in questions 1 to 7 prove that , |{:(a-b,b-c,c-a),(b-c,c-a,a-b),(c-a,a-b,b-c):}|=0

Show without expanding at any stage that: [(a-1)^2, a^2+1, a],[(b-1)^2, b^2+1,b],[(c-1)^2, c^2+1, c]|=0

Show without expanding at any stage that: [1/a, a,bc],[1/b,b,ca],[1/c, c, ab]|=0

If Delta=det[[0,b-a,c-aa-b,0,c-ba-c,b-c,0]], then Delta

RD SHARMA-DETERMINANTS-Solved Examples And Exercises
  1. In a triangleABC, if |(1,1,1),(1+sinA,1+sinB,1+sinC),(sinA+sin^2A,sinB...

    Text Solution

    |

  2. Show that : |x y z x^2y^2z^2x^3y^3z^3|=x y z(x-y)(y-z)(z-x)dot

    Text Solution

    |

  3. Without expanding or evaluating show that |[0 , b-a , c-a] , [a-b , 0...

    Text Solution

    |

  4. If A is a skew-symmetric matrix of odd order n , then |A|=0

    Text Solution

    |

  5. Show that: |x p q p x q q q x|=(x-p)(x^2+p x-2q^2)dot

    Text Solution

    |

  6. If f(x)=|(a,-1 ,0),(ax,a,-1),(a x^2,a x, a)|, find the value of f(2x)-...

    Text Solution

    |

  7. If a , b , c are distinct real numbers and the system of equations a x...

    Text Solution

    |

  8. If x , y , z are not all zero such that a x+y+z=0, x+b y+z=0, ...

    Text Solution

    |

  9. Find the value of lambda for which the homogeneous system of equations...

    Text Solution

    |

  10. If the system of equations x=c y+b z y=a z+c x z=b x+a y has...

    Text Solution

    |

  11. A matrix A of order 3xx3 has determinant 5. What is the value of |3A|?

    Text Solution

    |

  12. If A is a square matrix such that |A|=2 , write the value of |AA^T|

    Text Solution

    |

  13. Find the real values of lambda for which the following system of linea...

    Text Solution

    |

  14. If a , b , c are non-zero real numbers and if the system of equations...

    Text Solution

    |

  15. Which of the following is not correct in a given determinant of A , wh...

    Text Solution

    |

  16. Let |(x,2,x),(x^2,x,6),(x,x,6)|=a x^4+b x^3+c x^2+dx+edot Then, the va...

    Text Solution

    |

  17. Let △=|(A x,x^2, 1),(B y, y^2, 1),(C z, z^2, 1)| and△1=|(A,B, C),( x, ...

    Text Solution

    |

  18. If Delta1=|[a, b, c],[ x, y, z],[ p, q, r]| and Delta2=|[q,-b, y],[-p,...

    Text Solution

    |

  19. Without expanding show that: =|cos e c^2thetacot^2theta1cot^2thetacos ...

    Text Solution

    |

  20. Find the value of the determinant =|2 3 4 5 6 8 6x9x 12 x|dot

    Text Solution

    |