1. Let's clarify the concept of placing a function, which usually means defining or writing the function explicitly. 2. A function is a rule that assigns each input exactly one output. It is often written as $f(x) = expression$ where $x$ is the input variable. 3. For example, if you have a function that doubles the input, you write it as $f(x) = 2x$. 4. To place or define a function, you need to know what the function does to the input. 5. Once you know the rule, you write it in the form $f(x) = ...$ showing how $x$ is transformed. 6. If you have a specific function or example you want to understand, please provide it, and I can explain how it is placed or written step-by-step.