What is the domain of f(x)=(3x)/(x+3) ?

The domain of f(x)=(3x)/(x+3) is x -3

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domain of f(x)=(3x)/(x+3)

domain

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

x < - 3 or x > - 3

Solution steps

Find undefined (singularity) points:

x = - 3

The function domain

x < - 3 or x > - 3

f (x) = ∣ x ∣ + 4

\frac{3 x + 4}{x ^{2} - 25}

f (x) = 3 y - x = 3

f (x) = \frac{3 x ^{2} - 5 x - 2}{x ^{2} - 4}

2^{x - 1} + 2

What is the domain of f(x)=(3x)/(x+3) ?
The domain of f(x)=(3x)/(x+3) is x<-3\lor x>-3