Maxima and MinimaHard
Question
f(x) = 1 + [cos x]x, in 0 < x ≤ 
(where [.] denotes greatest integer function)
(where [.] denotes greatest integer function)
Options
A.has a minimum value 0
B.has a maximum value 2
C.is continuous in 
D.is not differentiable at x = 
Solution
Since f(x) = 1 in 0 < x < 
(as [cos x] = 0)
∴ f(x) is continuous in
(as [cos x] = 0)∴ f(x) is continuous in
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