Step-by-step explanation
Let's analyze the formula of our function:
Note that the expression on the right-hand side makes sense for any real number; then, the domain of f consists of all real numbers.
Now, let's analyze the graph of f:
Note that the function takes values ( "vertical values") from 3 up. The value three is included. Then, the range of the f consists of all y such that
Answer
The domain of f consists of all real numbers.
The range of the f consists of all y such that