What is the domain of f(x)=-(21)/((4+x)^2) ?

The domain of f(x)=-(21)/((4+x)^2) is x -4

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domain of f(x)=-(21)/((4+x)^2)

domain

f (x) = - \frac{21}{( 4 + x ) ^{2}}

x < - 4 or x > - 4

Interval Notation

(- \infty, - 4) \cup (- 4, \infty)

Solution steps

Find undefined (singularity) points:

x = - 4

The function domain

x < - 4 or x > - 4

f (x) = sin (π + 4 x)

f (x) = 6 x - 2 x

f (x) = x^{3} - 7 x

f (x) = \frac{8 x ^{3} + 7 x ^{2} + 20}{2}

0.5 cos (16000 π t)

What is the domain of f(x)=-(21)/((4+x)^2) ?
The domain of f(x)=-(21)/((4+x)^2) is x<-4\lor x>-4