What is the domain of f(x)=(x+7)/(x-9) ?

The domain of f(x)=(x+7)/(x-9) is x 9

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domain of f(x)=(x+7)/(x-9)

domain

f (x) = \frac{x + 7}{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

\frac{7 - x ^{2}}{x ^{2} + 2 x - 15}

f (x) = \frac{15}{\frac{3}{x} - 1}

\frac{2 x}{3 x + 6}

f (x) = - 5 x + 4 - x - 2

lo g_{5} (5 - 2 x)

What is the domain of f(x)=(x+7)/(x-9) ?
The domain of f(x)=(x+7)/(x-9) is x<9\lor x>9