What is the domain of f(x)=(x-9)/(x+3) ?

The domain of f(x)=(x-9)/(x+3) is x -3

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domain of f(x)=(x-9)/(x+3)

domain

f (x) = \frac{x - 9}{x + 3}

x < - 3 or x > - 3

Interval Notation

(- \infty, - 3) \cup (- 3, \infty)

Solution steps

Find undefined (singularity) points:

x = - 3

The function domain

x < - 3 or x > - 3

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

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

f (x) = - 15 - 5 x

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

What is the domain of f(x)=(x-9)/(x+3) ?
The domain of f(x)=(x-9)/(x+3) is x<-3\lor x>-3