What is the domain of f(x)=(1+x^2)/(x^2) ?

The domain of f(x)=(1+x^2)/(x^2) is x 0

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domain of f(x)=(1+x^2)/(x^2)

domain

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

\frac{x ^{2} + 2 x - 24}{x ^{2} - 2 x - 8}

f (x) = \frac{x ^{2}}{7 - x}

f (x) = 8 + (ln (x^{2} - 25))^{2}

f (x) = x^{- 2}

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