What is the domain of f(x)=3log_{2}(-x)-9 ?

The domain of f(x)=3log_{2}(-x)-9 is x<0

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domain of f(x)=3log_{2}(-x)-9

domain

f (x) = 3 lo g_{2} (- x) - 9

x < 0

Interval Notation

(- \infty, 0)

Solution steps

Find positive values for logs:

x < 0

The function domain

x < 0

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

y = tan (- x)

y = x (x + 6)

f (a) = 3 a - 7

f (x) = 2^{3 x + 7}

What is the domain of f(x)=3log_{2}(-x)-9 ?
The domain of f(x)=3log_{2}(-x)-9 is x<0