Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let f(x) = 
the set of values of b for which f(x) has greatest value at x = 1 is given by :
A
1 ≤ b ≤ 2
B
b = {1, 2}
C
b ∈ ( − ∞ , − 1)
D
Text Solution
Verified by ExpertsThe correct answer is:
D
f(1 – ) ≤ f(1) and f(1 + ) ≤ f(1)
– 2 + log 2 (b 2 – 2) ≤ 5
0 < b 2 – 2 ≤ 128 2 < b 2 ≤ 130
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