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

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

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

domain

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

6 x^{3} + 45 x^{2} - 108 x + 6

f (x) = \frac{3 x}{x ^{2} - 4}

e^{t} - t

\frac{5}{2 5 x + 6}

8 x^{3}

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