What is the domain of f(x)=(x-9)/(x+1) ?

The domain of f(x)=(x-9)/(x+1) is x -1

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domain of f(x)=(x-9)/(x+1)

domain

f (x) = \frac{x - 9}{x + 1}

x < - 1 or x > - 1

Interval Notation

(- \infty, - 1) \cup (- 1, \infty)

Solution steps

Find undefined (singularity) points:

x = - 1

The function domain

x < - 1 or x > - 1

\frac{x - 1}{x ^{2} + 4}

y = 5 - x^{2}

sin (x + 3)

f (x) = 500000 (1 - \frac{x}{40})

\frac{2 x ^{2} - 2 x - 4}{x ^{2} + x - 12}

What is the domain of f(x)=(x-9)/(x+1) ?
The domain of f(x)=(x-9)/(x+1) is x<-1\lor x>-1