Home
Class 12
MATHS
If alpha, beta be the roots of the equat...

If `alpha, beta` be the roots of the equation `x^(2)+x+1=0`, the value of `alpha^(4)beta^(4)-alpha^(-1)beta^(-1)` is

A

`-1`

B

1

C

0

D

2

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MATHEMATICS (2011)

    WB JEE PREVIOUS YEAR PAPER|Exercise DESCRIPTIVE TYPE QUESTIONS|10 Videos

  • QUESTION PAPER 2008

    WB JEE PREVIOUS YEAR PAPER|Exercise MULTIPLE CHOICE QUESTIONS|80 Videos

Similar Questions

Explore conceptually related problems

IF alpha and beta be the roots of the equation 5x^2+7x+3=0 , find the value of (alpha^3+beta^3)/(alpha^-1+beta^-1) .

IF alpha and beta are the roots of the equation x(x-3)=4, find the value of alpha^2+beta^2 .

If alphaandbeta be the roots of the equation 3x^(2)+8x+2=0 , then the value of ((1)/(alpha)+(1)/(beta))

IF alpha and beta be the roots of the equation ax^2+bx+c=0 , find the values of 1/alpha^3+1/beta^3

If alpha,beta are the roots of the quadratic equation x^(2)+px+q=0 ,then the values of alpha^(3)+beta^(3)andalpha^(4)+alpha^(2)beta^(2)+beta^(4) are respectively .

If alpha,beta,gamma are the roots of the equation x^3+x+1=0 , then the value of alpha^3+beta^3+gamma^3 is.

If alphaandbeta be the roots of the equation 5x^(2)+2x-3=0 , then find the values of ((1)/(alpha)+(1)/(beta))

If alpha and beta be the roots of equation x^(2) + 3x + 1 = 0 then the value of ((alpha)/(1 + beta))^(2) + ((beta)/(1 + alpha))^(2) is equal to

If alpha,beta,gamma are the roots of he euation x^3+4x+1=0, then find the value of (alpha+beta)^(-1)+(beta+gamma)^(-1)+(gamma+alpha)^(-1) .

If alphaandbeta be the roots of the quadratic equation 2x^(2)+2x-3=0 , then find the values of alpha+beta+1

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
  1. Show that ,the maximum value of ((1)/(x))^(x) is e^((1)/(e)

    Text Solution

    |

  2. The value of the integeral int(-pi//7)^(pi//7)x^(3) cos^(2)x dx is

    Text Solution

    |

  3. The sum of the series 1+(1)/(3.9)+(1)/(5.81)+(1)/(7.729)+……. to oo is

    Text Solution

    |

  4. Using integration find the area of the region bounded by the parabola ...

    Text Solution

    |

  5. If m and n denote respectively the order and degree of a differential ...

    Text Solution

    |

  6. A particle is moving along the x - axis in such a way that it has disp...

    Text Solution

    |

  7. The identity mapping I(c ) : S to S is defined as I(s)(x)=x for x in S...

    Text Solution

    |

  8. If z = x + iy and arg ((z-1)/(z+1))=(pi)/(4), then the locus of (x, y)...

    Text Solution

    |

  9. Solve the equation (dy)/(dx)+y/x=x^2

    Text Solution

    |

  10. A partiole is moving in a straight line such that its velocity at time...

    Text Solution

    |

  11. For an integrable function f (x) in [-3, 3], which of the following is...

    Text Solution

    |

  12. The area bounded by the parabola y^(2)=2x+1 and the line x-y=1 is

    Text Solution

    |

  13. If the circles x^(2)+y^(2)-4r x-2ry+4r^(2)=0 and x^(2)+y^(2)=25 touch ...

    Text Solution

    |

  14. The minimum value of 6 cos alpha + 8 sin alpha + 11 is

    Text Solution

    |

  15. If alpha, beta be the roots of the equation x^(2)+x+1=0, the value of ...

    Text Solution

    |

  16. If A=[(0,3),(4,5)] and kA=[(0,4a),(3b,60)], then the values of k, a an...

    Text Solution

    |

  17. Let f(x)=(ax)/(x+1), x ne1, then the value of 'a' for which f[f(x)]=x ...

    Text Solution

    |

  18. If x in[0,6], the probability that the expression x^(2)-7x+10 ge 0 is

    Text Solution

    |

  19. Let f(x+y)=f(x)f(y)AA x, in IR, f(6)=5 and f'(0)=1. Then the value of ...

    Text Solution

    |

  20. If the ratio of the sides of a triangle is 4 : 5 : 7, then the triangl...

    Text Solution

    |