Home
Class 12
MATHS
Without expanding evaluate the determina...

Without expanding evaluate the determinant `|(x^2+x^(-1))^2(a^2-a^(-1))^2 1(a^y+a^(-y))^2(a^y-a^(-y))^2 1(a^2+a^(-z))^2(a^z-a^(-z))^2 1|,` where `a , >0a n dx , y , z in Rdot`

Text Solution

Verified by Experts

`|((a^x+a^-x)^2,(a^x+a^-x)^2,1),((a^y+a^-y)^2,(a^y+a^-y)^2,1),((a^z+a^-z)^2,(a^z+a^-z)^2, 1)|`

`C_1rarrC_1-C_2`

`=>``|((a^x+a^-x)^2-(a^x+a^-x)^2,(a^x+a^-x)^2,1),((a^y+a^-y)^2-(a^y+a^-y)^2,(a^y+a^-y)^2,1),((a^z+a^-z)^2-(a^z+a^-z)^2,(a^z+a^-z)^2, 1)|`

`a^2-b^2=(a+b)(a-b)`

...
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

The value of Delta = |((a^(x) + a^(-x))^(2),(a^(x) -a^(-x))^(2),1),((a^(y) + a^(-y))^(2),(a^(y) -a^(-y))^(2),1),((a^(z) + a^(-z))^(2),(a^(z) - a^(-z))^(2),1)| , is

If a, b,c> 0 and x,y,z in R then the determinant: |((a^x+a^-x)^2,(a^x-a^-x)^2,1),((b^y+b^-y)^2,(b^y-b^-y)^2,1),((c^z+c^-z)^2,(c^z-c^-z)^2,1)| is equal to

The value of the determinant |{:(1,x,x^2),(1,y,y^2),(1,z,z^2):}| is equal to

The value of the determinant |{:(x^(2),1,y^(2)+z^(2)),(y^(2),1,z^(2)+x^(2)),(z^(2),1,x^(2)+y^(2)):}| is :

Show that: ((a^(x+1))/(a^(y+1)))^(x+y)((a^(y+2))/(a^(z+2)))^(y+z)((a^(z+3))/(a^(x+3)))^(z+x)=1

If x,y,z are distinct real numbers then the value of ((1)/(x-y))^(2)+((1)/(y-z))^(2)+((1)/(z-x))^(2) is

(1)/((x-y)^(2))+(1)/((y-z)^(2))+(1)/((z-x)^(2))=((1)/(x-y)+(1)/(y-z)+(1)/(z-x))^(2)

If x+y+z=0 then what is the value of (1)/(x^(2)+y^(2)-z^(2)) +(1)/(y^(2)+z^(2)-x^(2)) +(1)/(z^(2)+x^(2)-y^(2)) ?

If |(x,x^(2),1+x^(2)),(y,y^(2),1+y^(2)),(z,z^(2),1+z^(2))| where x, y, z are distinct what is |A| ?

RD SHARMA-DETERMINANTS-Solved Examples And Exercises
  1. Without expanding evaluate the determinant |[41,1,5],[79,7,9],[29,5,3]...

    Text Solution

    |

  2. Show that matrix |(1,a,b+c),(1,b,c+a),(1,c, a+b)|=0

    Text Solution

    |

  3. Without expanding evaluate the determinant |(x^2+x^(-1))^2(a^2-a^(-1))...

    Text Solution

    |

  4. If 1=|(1, 1, 1),(x^2,y^2,z^2),(x, y ,z)|a n d2=|(1 ,1, 1),(y z, z x,x ...

    Text Solution

    |

  5. Without expanding show that |[b^2c^2,b c, b+c],[c^2a^2,c a ,c+a ],[a^2...

    Text Solution

    |

  6. Without expanding evaluate the determinant |[sinalpha,cosalpha,sin(alp...

    Text Solution

    |

  7. If A+B+C=pi, then the value of |[sin(A+B+C),sin(A+C),cosC],[-sinB,0...

    Text Solution

    |

  8. If Ar=|[1,r,2^r],[2,n,n^2],[n,(n(n+1))/2, 2^(n+1)]|, the value of sum(...

    Text Solution

    |

  9. If the determinant |[a,b,2aalpha+3b],[b,c,2balpha+3c],[2aalpha+3b,2bal...

    Text Solution

    |

  10. If a , b , c are distinct, then the value of x satisfying |(0,x^2-a, x...

    Text Solution

    |

  11. Using the factor theorem it is found that a+b , b+c and c+a are thr...

    Text Solution

    |

  12. Let |(x^2+3x,x-1,x+3),(x+1,-2x x-4),(x-3,x+4 ,3x)|=a x^4+b x^3+c x^2+e...

    Text Solution

    |

  13. If Dk=|[1,n,n],[2k,n^2+n+2,n^2+n],[2k-1,n^2,n^2+n+2]| and sum(k=1)^...

    Text Solution

    |

  14. If Delta1=|(1, 1, 1),(a, b, c),( a^2,b^2,c^2)|,Delta2=|(1,bc, a),(1,ca...

    Text Solution

    |

  15. The value of the determinant |(a^2,a,1),(cosn x,cos(n+1)x,cos(n+2)x),(...

    Text Solution

    |

  16. Evaluate: (i) |(5 ,4),(-2, 3)| (ii) |(sintheta,costheta),(-costheta,s...

    Text Solution

    |

  17. Evaluate: (i) |(x^2+x y+y^2,x+y ),(x^2-x y+y^2,x-y)| (ii) |(1,(log)b ...

    Text Solution

    |

  18. Evaluate D =|[2, 3,-2],[ 1, 2, 3],[-2, 1,-3]| by expanding it along th...

    Text Solution

    |

  19. Evaluate the determinant D=|2 3-2 1 2 3-2 1-3| by expanding it alon...

    Text Solution

    |

  20. Evaluate D =|[2, 3,-2],[ 1, 2, 3],[-2, 1,-3]| by using Sarrus diagram.

    Text Solution

    |