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

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

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

domain

f (x) = \frac{x + 2}{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

x^{3} - 9 x^{2} + 4 x - 36

2 x

4 tan (x)

x^{3}

f (x) = - 36 - (1.2 x + 5)^{2} + 3

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