What is the domain of (1+x^2)/(4-x^2) ?

The domain of (1+x^2)/(4-x^2) is x 2

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domain of (1+x^2)/(4-x^2)

domain

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

x < - 2 or - 2 < x < 2 or x > 2

Interval Notation

(- \infty, - 2) \cup (- 2, 2) \cup (2, \infty)

Solution steps

Find undefined (singularity) points:

x = 2, x = - 2

The function domain

x < - 2 or - 2 < x < 2 or x > 2

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

f (x) = 1 + ln (x + 6)

What is the domain of (1+x^2)/(4-x^2) ?
The domain of (1+x^2)/(4-x^2) is x<-2\lor-2<x<2\lor x>2