What is the critical f(x)= x/(x^2+11x+28) ?

The critical f(x)= x/(x^2+11x+28) is x=-2sqrt(7),x=2sqrt(7)

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critical f(x)= x/(x^2+11x+28)

critical points

f (x) = \frac{x}{x ^{2} + 11 x + 28}

x = - 27, x = 27

Solution steps

\frac{x}{x ^{2} + 11 x + 28}

Find where

f^{'} (x)

is equal to zero or undefined

x = - 27, x = 27, x = - 7, x = - 4

Identify critical points not in

f (x)

domain

Domain of

\frac{x}{x ^{2} + 11 x + 28} : x < - 7 or - 7 < x < - 4 or x > - 4

\frac{x}{x ^{2} + 11 x + 28}

is not defined at

x = - 7, x = - 4

, therefore:

x = - 27, x = 27

\frac{tan ( x )}{x}

f (x) = 3 x - 2

\frac{tan ( x ^{5} )}{x ^{3}}

f (x) = \frac{4 x ^{2} - 5}{2 x ^{2} + 8}

f (x) = 2 x - 8

What is the critical f(x)= x/(x^2+11x+28) ?
The critical f(x)= x/(x^2+11x+28) is x=-2sqrt(7),x=2sqrt(7)