What is the domain of f(x)=ln(x^2-18x) ?

The domain of f(x)=ln(x^2-18x) is x 18

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domain of f(x)=ln(x^2-18x)

domain

f (x) = ln (x^{2} - 18 x)

x < 0 or x > 18

Interval Notation

(- \infty, 0) \cup (18, \infty)

Solution steps

Find positive values for logs:

x < 0 or x > 18

The function domain

x < 0 or x > 18

f (x) = \frac{2 x - 1}{x + 3}

f (x) = 5 x - 45

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

x^{2} + 14 x + 44

f (x) = 3 x + 9

What is the domain of f(x)=ln(x^2-18x) ?
The domain of f(x)=ln(x^2-18x) is x<0\lor x>18