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

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

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

domain

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

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

\frac{1 - 6 x}{3 + x}

f (t) = 2 - 14 t

f (x) = \frac{x - 7}{x - 8}

f (x) = \frac{x + 4}{3}

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