Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If all the roots of 
are of unit modulus, then :
A
B
C
D
All of the above
Text Solution
Verified by ExpertsThe correct answer is:
D
Let roots be 
with
For cubic
By Vieta:
Taking modulus:
Now,
Maximum value of 
when all are 1:
Similarly,
Maximum value 
.
Hence all are true.
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