What is the number of critical points for f(x) = max(sinx, cosx) for x belonging to (0, 2π)?

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answerhappygod
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What is the number of critical points for f(x) = max(sinx, cosx) for x belonging to (0, 2π)?

Post by answerhappygod »

a) 2
b) 5
c) 3
d) 4
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