Final answer:
Big-θ notation represents the upper bound, Big-O notation represents the upper bound, and Big-Ω notation represents the lower bound of a function.
Step-by-step explanation:
The correct matches between the asymptotic notations and their definitions are:
- Big-θ notation represents the upper bound of a function.
- Big-O notation represents the upper bound of a function.
- Big-Ω notation represents the lower bound of a function.
Remember that Big-θ notation represents both the upper and lower bounds of a function, while Big-O and Big-Ω notation only represent the upper and lower bounds respectively. It's important to understand the definitions and applications of these notations when analyzing the time complexity of algorithms.