Find the domain and range of the real function defined by
`f(x) =(1)/((1-x^(2)).`

Explanation

To find the domain and range of the function \( f(x) = \frac{1}{1 - x^2} \), we will follow these steps:

### Step 1: Determine the Domain
The domain of a function is the set of all possible input values (x-values) that will not cause any mathematical issues, such as division by zero.

1. The denominator of the function is \( 1 - x^2 \).
2. We need to find when this denominator is equal to zero:
\[
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