What is the domain of f(x)=(2x+9)/(x-3) ?

The domain of f(x)=(2x+9)/(x-3) is x 3

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domain of f(x)=(2x+9)/(x-3)

domain

f (x) = \frac{2 x + 9}{x - 3}

x < 3 or x > 3

Interval Notation

(- \infty, 3) \cup (3, \infty)

Solution steps

Find undefined (singularity) points:

x = 3

The function domain

x < 3 or x > 3

f (x) = x + 2 + 3

f (x) = 5 x - 7

y = \frac{e ^{x}}{1 + 2 e ^{x}}

f (x) = \frac{( 5 - x )}{( x + 3 )}

y = e (6 x - \frac{1}{6}) + 6

What is the domain of f(x)=(2x+9)/(x-3) ?
The domain of f(x)=(2x+9)/(x-3) is x<3\lor x>3