Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let 
be an A.P. If 
, the product 
is minimum and the sum of its first n terms is zero, then 
is equal to?
A
24
B
C
D
9
Text Solution
Verified by ExpertsThe correct answer is:
A
...................(1)
Differentiating with respect to d
, (Z=minimum)
Now, 
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