What is the domain of f(x)=(2-x)/(x+1) ?

The domain of f(x)=(2-x)/(x+1) is x -1

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domain of f(x)=(2-x)/(x+1)

domain

f (x) = \frac{2 - x}{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{2 x}{100 - x}

- x^{2} + 2 x + 3

f (x) = 9 x + 5

f (x) = \frac{- 9}{- 4 x + 2}

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

What is the domain of f(x)=(2-x)/(x+1) ?
The domain of f(x)=(2-x)/(x+1) is x<-1\lor x>-1