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

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

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domain of f(x)=(x-3)/(9x-x^3)

domain

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

x < - 3 or - 3 < x < 0 or 0 < x < 3 or x > 3

Solution steps

Find undefined (singularity) points:

x = 0, x = - 3, x = 3

The function domain

x < - 3 or - 3 < x < 0 or 0 < x < 3 or x > 3

\frac{( 5 x - 4 )}{7 x + 3}

tan (2 x - 5)

f (x) = - 9 - x^{2}

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

f (x) = x^{2} ln (\frac{x}{6})

What is the domain of f(x)=(x-3)/(9x-x^3) ?
The domain of f(x)=(x-3)/(9x-x^3) is x<-3\lor-3<x<0\lor 0<x<3\lor x>3