What is the domain of f(x)=(2x)/(x+9) ?

The domain of f(x)=(2x)/(x+9) is x -9

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domain of f(x)=(2x)/(x+9)

domain

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

x < - 9 or x > - 9

Interval Notation

(- \infty, - 9) \cup (- 9, \infty)

Solution steps

Find undefined (singularity) points:

x = - 9

The function domain

x < - 9 or x > - 9

3 sin (2 x - π)

2 x + y = - 9

y = 4 x + 5

(5, - 2), (6, 4)

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

What is the domain of f(x)=(2x)/(x+9) ?
The domain of f(x)=(2x)/(x+9) is x<-9\lor x>-9