A tornado is a violent rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable of tremendous destruction with wind speeds of up to 300 mph. They can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees.
In the previous section we saw limits that were infinity and itâs now time to take a look at limits at infinity. By limits at infinity we mean one of the following two limits. In other words, we are going to be looking at what happens to a function if we let x get very large in either the positive or negative sense.
To summarize: D EFINITION 2.2. The limit of a function. We say that a function f(x) approaches a limit L as x approaches c if the sequence of values of x, both from the left and from the right, causes the sequence of values of f(x) to satisfy the definition of approaches a limit L: Definition 2.1.gain, when we say that the values of x approach a limit, that limit is never a value of x. There is always a difference between the values of x and their limit. The limit is the boundary beyond which no member of the sequence will pass. We summarize this in the following definition.