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

Explanation

To find the domain and range of the function \( f(x) = \sqrt{x - 1} \), 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) for which the function is defined. For the function \( f(x) = \sqrt{x - 1} \), the expression under the square root must be non-negative, since the square root of a negative number is not defined in the set of real numbers.

We set up the inequality:
\[
x - 1 \geq 0
...