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

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

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

domain

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

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

\frac{8 x - 24}{x ^{2} - x - 20}

\frac{x ^{2} - 9}{x ^{2} - 16}

g (x) = \frac{5}{3 x - 1}

f (x) = \frac{x ^{2} + 4}{x ^{2} - 1}

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