Calculus- Critical Numbers

Question

1) Find critical numbers of the problems below:

 A) Find all critical numbers of the function f(x) = sin^2(6x) + cos(6x), 0 < x < π/3.

 

 B) Find all critical numbers of of the function f (θ) = 2sec θ + tanθ, 14π < θ < 16π .

Answer 1

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