What is the critical cos(3x) ?

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

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critical cos(3x)

critical points

cos (3 x)

x = \frac{2 π}{3} n, x = \frac{π}{3} + \frac{2 π}{3} n

Solution steps

cos (3 x)

Find where

f^{'} (x)

is equal to zero or undefined

x = \frac{2 π}{3} n, x = \frac{π}{3} + \frac{2 π}{3} n

Identify critical points not in

f (x)

domain

Domain of

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

All critical points are in domain

x = \frac{2 π}{3} n, x = \frac{π}{3} + \frac{2 π}{3} n

y - 70.75 = 0.11 (x - 250)

f (x) = \frac{x ^{2} - 4}{x ^{2} - 3 x + 2}

(5, 2), (- 6, - 3)

f (x) = (x + 5)^{\frac{4}{5}}

- \frac{1}{5} 3^{x} - 2

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