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

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

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

f (x) = 5 \cdot 3^{x}

x^{2} e^{1 - x^{2}}

(4, 2), (- 2, 4)

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

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

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