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

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

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

domain

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

x < 1 or x > 1

Interval Notation

(- \infty, 1) \cup (1, \infty)

Solution steps

Find undefined (singularity) points:

x = 1

The function domain

x < 1 or x > 1

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

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

f (x) = \frac{x - 5}{x - 2}

f (x) = 4^{x - 1}

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

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