What is the domain of (900-2x)/(x-30) ?

The domain of (900-2x)/(x-30) is x 30

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domain of (900-2x)/(x-30)

domain

\frac{900 - 2 x}{x - 30}

x < 30 or x > 30

Interval Notation

(- \infty, 30) \cup (30, \infty)

Solution steps

Find undefined (singularity) points:

x = 30

The function domain

x < 30 or x > 30

\frac{x}{4 1 - x ^{2}}

f (x) = \frac{9}{x + 11}

f (x) = \frac{9 x}{4 x - 1}

f (x) = - 0.0625 t^{2} + 3 t - 20

\frac{x + 10}{x ^{2} - 100}

What is the domain of (900-2x)/(x-30) ?
The domain of (900-2x)/(x-30) is x<30\lor x>30