What is the critical 3cos(4x) ?

The critical 3cos(4x) is x= pi/2 n,x= pi/4+pi/2 n

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critical 3cos(4x)

critical points

3 cos (4 x)

x = \frac{π}{2} n, x = \frac{π}{4} + \frac{π}{2} n

Solution steps

3 cos (4 x)

Find where

f^{'} (x)

is equal to zero or undefined

x = \frac{π}{2} n, x = \frac{π}{4} + \frac{π}{2} n

Identify critical points not in

f (x)

domain

Domain of

3 cos (4 x) : - \infty < x < \infty

All critical points are in domain

x = \frac{π}{2} n, x = \frac{π}{4} + \frac{π}{2} n

- 6 x^{2} + 37 x + 13

\frac{1}{3} x^{3} - 2 x^{2} + 4 x - 4

f (x) = \frac{3 x + 2}{x}

f (x) = - x^{2} - 4 x

(4, 1), (- 2, - 5)

What is the critical 3cos(4x) ?
The critical 3cos(4x) is x= pi/2 n,x= pi/4+pi/2 n