Evaluate the left hand limit at an asymptote algebraically

The video tutorial explains the concept of limits, focusing on approaching numbers from the left on a number line. It uses the example of approaching -4 and discusses the calculation of limits using specific values. The tutorial emphasizes understanding positive and negative outcomes in limits and concludes with the concept of asymptotes and positive infinity.

Why is it important to consider both positive and negative values when evaluating limits?

What happens when you add -4.01 and 4? Discuss the implications of this operation.