What is the domain of f(x)=2x+9x^{-1} ?

The domain of f(x)=2x+9x^{-1} is x 0

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domain of f(x)=2x+9x^{-1}

domain

f (x) = 2 x + 9 x^{- 1}

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

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

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

f (x) = - lo g_{8} (x - 1) - 2

x^{2} + 3 x - 3

What is the domain of f(x)=2x+9x^{-1} ?
The domain of f(x)=2x+9x^{-1} is x<0\lor x>0