Home
Class 12
MATHS
If 1,alpha1,alpha2,alpha3,.........,alph...

If `1,alpha_1,alpha_2,alpha_3,.........,alpha_(3n)` be the roots of the eqution `x^(3n+1) - 1 =0`, and w be an imaginary cube root of unity, then `((w^2-alpha_1)(w^2-alpha_2)....(w^(3n)-alpha_(3n))) /((w-alpha_1)(w2-alpha)....(w-alpha_(3n)))`

A

`omega`

B

`-omega`

C

1

D

`omega^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS AND QUADRATIC EQUATIONS

    AAKASH INSTITUTE|Exercise Assignment (Section -C) (objective Type Questions ( more thena one options are correct )|35 Videos
  • COMPLEX NUMBERS AND QUADRATIC EQUATIONS

    AAKASH INSTITUTE|Exercise Assignment (Section -D) Linked comprehension Type Questions|13 Videos
  • COMPLEX NUMBERS AND QUADRATIC EQUATIONS

    AAKASH INSTITUTE|Exercise Assignment (Section -A) (objective Type Questions ( one option is correct)|47 Videos
  • BINOMIAL THEOREM

    AAKASH INSTITUTE|Exercise Assignment (section-J) Objective type question (Aakash Challengers Questions)|4 Videos
  • CONIC SECTIONS

    AAKASH INSTITUTE|Exercise SECTION - J ( Aakash Challengers Questions )|14 Videos

Similar Questions

Explore conceptually related problems

if 1,alpha_1, alpha_2, ……alpha_(3n) be the roots of equation x^(3n+1)-1=0 and omega be an imaginary cube root of unilty then ((omega^2-alpha_1)(omega^2-alpha).(omega^2-alpha(3n)))/((omega-alpha_1)(omega-alpha_2)……(omega-alpha_(3n)))= (A) omega (B) -omega (C) 1 (D) omega^2

If alpha is an imaginary fifth root of unity, then log_(2)|1+alpha+alpha^(2)+alpha^(3)-1/alpha|=

If w be an imaginary cube root of unity,show that 1+w^(n)+w^(2n)=0, for n=2,4

If 1,alpha_(1),alpha_(2),alpha_(3),alpha_(4) are the fifth roots of unity then sum_(i=1)^(4)(1)/(2-alpha_(i))=

If alpha_(1),alpha_(2),alpha_(3),alpha_(4) are the roots of the equation x^(4)+(2-sqrt(3))x^(2)+2+sqrt(3)=0 then find the value of (1-alpha_(1))(1-alpha_(2))(1-alpha_(3))(1-alpha_(4))

If alpha_(1),alpha_(2),alpha_(3)......alpha_(n) are roots of the equation f(x)=0 then (-alpha_(1),-alpha_(2),-alpha_(3),......alpha_(n)) are the roots of

If 1,alpha_1, alpha_2, …alpha_(n-1) be n, nth roots of unity show that (1-alpha_1)(1-alpha_2).(1-alpha(n-1)=m

If alpha_(1),alpha_(2),alpha_(3),.........,alpha_(n) are the roots of f(x)=0 then the equation whose roots (alpha_(1))/(K),(alpha_(2))/(K),(alpha_(3))/(K),.........(alpha_(n))/(K) is where , K!=0

If 1,alpha_(1),alpha_(2),alpha_(3),alpha_(4) be the roots x^(5)-1=0 then value of -alpha_(2)(omega-alpha_(1))/(omega^(2)-alpha_(1))*(omega-alpha_(2))/(omega^(2)-alpha_(2))*(omega-alpha_(3))/(omega^(2)-alpha_(3))*(omega-alpha_(4))/(omega^(2)-alpha_(4)) is (where omega is imaginary cube root of unity)

AAKASH INSTITUTE-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-Assignment (Section -B) (objective Type Questions ( one option is correct)
  1. If z^(2)+z+1=0 then the value of (z+1/z)^(2)+(z^(2)+1/z^(2))^(2)+(z...

    Text Solution

    |

  2. If omega is an imaginary fifth root of unity, then find the value of l...

    Text Solution

    |

  3. If 1,alpha1,alpha2,alpha3,.........,alpha(3n) be the roots of the equt...

    Text Solution

    |

  4. If z(1),z(2),z(3),z(4) are two pairs of conjugate complex numbers, th...

    Text Solution

    |

  5. If |z-4 +3i| le 2 then the least and the greatest values of |z| are q

    Text Solution

    |

  6. If |z1|=2,|z2|=3,|z3|=4 and |2z1+3z2+4z3|=4 then the expression |8z2z3...

    Text Solution

    |

  7. If z1 = cos theta + i sin theta and 1,z1,(z1)^2,(z1)^3,.....,(z1)^(n-1...

    Text Solution

    |

  8. The area of the triangle whose vertices are represented by the complex...

    Text Solution

    |

  9. The maximum value of |z| where z satisfies the condition |z+(2/z)|=2 i...

    Text Solution

    |

  10. The value of (1-tan^2 15^@)/(1+tan^2 15^@) is

    Text Solution

    |

  11. both roots of the equation (x-a)(x-b)+(x-b)(x-c)+(x-c)(x-a)=0 are

    Text Solution

    |

  12. If log sqrt(3)((|z|^(2)-|z|+1)/(2+|z|))gt2, then the locus of z is

    Text Solution

    |

  13. If arg z = pi/4 ,then

    Text Solution

    |

  14. The z^2 + z|z| + |z|^2 = 0, then locus of Z is

    Text Solution

    |

  15. The least value of p for which the two curves argz=pi/6 and |z-2sqrt(...

    Text Solution

    |

  16. Re((z+4)/(2z-1)) = 1/2, then z is represented by a point lying on

    Text Solution

    |

  17. If f(x) and g(x) are two polynomials such that the polynomial h(x)=xf(...

    Text Solution

    |

  18. The value of (x+omega+omega^(2)) (x +omega^(2)+omega^(4))(x +omega^(...

    Text Solution

    |

  19. If z= (sqrt3-i)/2 , " then " (i^(101)+z^(101))^(103) erqual

    Text Solution

    |

  20. The region of the complex plane for which |(z-a)/(z+veca)|=1,(Re(a) !=...

    Text Solution

    |