What is the domain of (x-3)/(x+3) ?

The domain of (x-3)/(x+3) is x -3

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domain of (x-3)/(x+3)

domain

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

x < - 3 or x > - 3

Interval Notation

(- \infty, - 3) \cup (- 3, \infty)

Solution steps

Find undefined (singularity) points:

x = - 3

The function domain

x < - 3 or x > - 3

f (x) = 6 x^{2} + 7 x - 5

f (x) = lo g_{3} (x - 1) + 0.239784

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

- x^{2} + 3

\frac{1}{x ^{3} + 4 x}