1. The problem asks to find the domain and range for the "fourth one." Since no explicit function is given, I will explain how to find domain and range generally. 2. **Domain** is the set of all possible input values ($x$) for which the function is defined. 3. **Range** is the set of all possible output values ($y$) the function can take. 4. To find the domain, look for values of $x$ that cause division by zero, negative square roots, or other undefined operations. 5. To find the range, analyze the function's behavior, find critical points, and determine the minimum and maximum values. 6. If you provide the explicit function for the "fourth one," I can find the exact domain and range. Since the function is not provided, I cannot give a specific answer.