Maxima and MinimaHard
Question
The least value of ′a′ for which the equation 
= a has atleast one solution on the interval (0, π/2) is -
= a has atleast one solution on the interval (0, π/2) is -Options
A.3
B.5
C.7
D.9
Solution
f(x) =
x∈
f′(x) = cos x
= cos x
= 6 + 3 = 9f(0+) → ∞
f
→ ∞⇒ a = 9
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