Home
Class 12
MATHS
If q(1), (2), q(3) are roots of the eq...

If `q_(1), _(2), q_(3)` are roots of the equation `x^(3)+64=0`, then the value of `|(q_(1),q_(2),q_(3)),(q_(2),q_(3), q_(1)),(q_(3),q_(1),q_(2))|` is :-

A

1

B

4

C

16

D

0

Text Solution

Verified by Experts

The correct Answer is:
D

`|(q_(1),q_(2),q_(3)),(q_(2),q_(3),q_(1)),(q_(3),q_(1),q_(2))|rarrC_(1)+C_(2)+C_(3)`
`=(q_(1)+q_(2)+q_(3))|(1, q_(2),q_(3)),(1,q_(3),q_(1)),(1,q_(1),q_(2))|`
`=0(because" sum of roots is zero")`
Promotional Banner

Similar Questions

Explore conceptually related problems

If q_(1),q_(2),q_(3) ar rootsof the equation x^(3)+64=0 then value of |{:(q_(1),q_(2),q_(3)),(q_(2),q_(3),q_(1)),(q_(3),q_(1),q_(2)):}|

Calculate Q_(1),Q_(2)and Q_(3),

A=[{:(l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)),(l_(3),m_(3),n_(3)):}] and B=[{:(p_(1),q_(1),r_(1)),(p_(2),q_(2),r_(2)),(p_(3),q_(3),r_(3)):}] Where p_(i), q_(i),r_(i) are the co-factors of the elements l_(i), m_(i), n_(i) for i=1,2,3 . If (l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)) and (l_(3),m_(3),n_(3)) are the direction cosines of three mutually perpendicular lines then (p_(1),q_(1), r_(1)),(p_(2),q_(2),r_(2)) and (p_(3),q_(),r_(3)) are

If alpha,beta are the roots of the equation x^(2)+px-r=0 and (alpha)/(3),3 beta are the roots of the equation x^(2)+qx-r=0, then r equals (i)((3)/(8))(p-3q)(3p+q)(ii)((3)/(8))(3p-q)(3p+q)(iii)((3)/(64))(q-3p)(p-3p)(iv)((3)/(64))(p-q)(q-3p)

If one root is square of the other root of the equation x^(2)+px+q=0, then the relation between p and q is (2004,1M)p^(3)-(3p-1)q+q^(2)=0p^(3)-q(3p+1)+q^(2)=0p^(3)+q(3p-1)+q^(2)=0p^(3)+q(3p+1)+q^(2)=0