What is the domain of f(x)=(9x+81)/x ?

The domain of f(x)=(9x+81)/x is x 0

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domain of f(x)=(9x+81)/x

domain

f (x) = \frac{9 x + 81}{x}

x < 0 or x > 0

Interval Notation

(- \infty, 0) \cup (0, \infty)

Solution steps

Find undefined (singularity) points:

x = 0

The function domain

x < 0 or x > 0

f (x) = x^{2} - 16

f (x) = ln (3 - 2 x^{2})

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

x + 2 y = 6, (1, - 3)

f (x) = \frac{x ^{2} - 9}{x ^{2} + 6}

What is the domain of f(x)=(9x+81)/x ?
The domain of f(x)=(9x+81)/x is x<0\lor x>0