What is the domain of f(x)=(x^2+7)/(x^2) ?

The domain of f(x)=(x^2+7)/(x^2) is x 0

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domain of f(x)=(x^2+7)/(x^2)

domain

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

y = - x^{2} + 4 x

y = 4^{x} + 8

f (x) = x^{2} - 4 x + 3

\frac{1}{x - 4}

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

What is the domain of f(x)=(x^2+7)/(x^2) ?
The domain of f(x)=(x^2+7)/(x^2) is x<0\lor x>0