Question

If ‘α’ be the non-real nth root of unity, then 1 + 3α + 5α² + . . . + (2n − 1)αⁿ⁻¹ is equal to

(A)  2n/1- α

(B)   n/1 - α

(C)  n/2(1 - α)

(D)  None of these

Answer 1

Correct option (D) None of these

Let