Q13 of 256 Page 7

Mark the correct alternative in the following:
If ω is a non-real cube root of unity and n is not a multiple of 3, then is equal to

Assume that n=2(not multiple of 3)

expend the determinant

∆=1(1-w³)-w² (w-w⁴ )+w(w² -w² )

∆=1- w³- w³+w⁶ + w³- w³

∆=0

Mark the correct alternative in the following:

If a, b, c are distinct then the value of x satisfying is

Mark the correct alternative in the following:

If the determinant , then

Mark the correct alternative in the following:

If , then the value of is

Mark the correct alternative in the following:

If a > 0 and discriminant of ax² + 2bx + c is negative, then is

Mark the correct alternative in the following:If ω is a non-real cube root of unity and n is not a multiple of 3, then is equal to