Limits That Do Not Exist at Origin

This example demonstrates limits that do not exist at the origin. It involves the concept of limits, using the graphs of functions f_5 and f_6 to visually understand the situation where a limit does not exist. By constructing these functions, one can observe the changes in function values near the origin, thereby understanding the reasons for the non-existence of the limit. Suitable for high school mathematics education and learning about the concept of limits.