If \( n \geq 3 \) and \( 1, \alpha_{1}, \alpha_{2}, \ldots \alpha_{...
Channel:
Subscribers:
449,000
Published on ● Video Link: https://www.youtube.com/watch?v=QvQ4WM7IRZg
If \( n \geq 3 \) and \( 1, \alpha_{1}, \alpha_{2}, \ldots \alpha_{n-1} \) are \( n \)th roots of unity then value of \( \sum_{1 \leq ij \leq n-1} \alpha_{i} \alpha_{j} \) is
(a) 0
(b) 1
(c) \( -1 \)
(d) \( (-1)^{n} \)
W
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions
Tags:
pw