Final answer:
To determine if a limit exists, you can evaluate the function at that point or use algebraic methods. If the function approaches a specific value as the input approaches a particular point, then the limit exists and the value of the limit is that specific value.
Step-by-step explanation:
The question asks whether a limit exists and if it does, what its value is. In calculus, limits are used to describe the behavior of functions as they approach a certain point or infinity. To determine if a limit exists, you can evaluate the function at that point or use algebraic methods such as factoring or rationalization. If the function approaches a specific value as the input approaches a particular point, then the limit exists and the value of the limit is that specific value.
For example, if we consider the function f(x) = x^2, we can see that as x approaches 2, the function approaches 4. Therefore, the limit of f(x) as x approaches 2 is 4. On the other hand, if we consider the function g(x) = 1/x, as x approaches 0, the function approaches infinity. So, the limit of g(x) as x approaches 0 is infinity.