What is the critical f(x)=2x^3-12x^2-30x+9 ?

The critical f(x)=2x^3-12x^2-30x+9 is x=-1,x=5

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critical f(x)=2x^3-12x^2-30x+9

critical points

f (x) = 2 x^{3} - 12 x^{2} - 30 x + 9

x = - 1, x = 5

Solution steps

2 x^{3} - 12 x^{2} - 30 x + 9

Find where

f^{'} (x)

is equal to zero or undefined

x = - 1, x = 5

Identify critical points not in

f (x)

domain

Domain of

2 x^{3} - 12 x^{2} - 30 x + 9 : - \infty < x < \infty

All critical points are in domain

x = - 1, x = 5

- 12 x^{2} - 18 x

f (x) = x^{3} + x^{2}

f (x) = \frac{x ^{3}}{x ^{2} - 1}

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

f (x) = \frac{1 - 3 x}{4 + x}

What is the critical f(x)=2x^3-12x^2-30x+9 ?
The critical f(x)=2x^3-12x^2-30x+9 is x=-1,x=5