The following expression states that as x approaches infinity, the value c is a very large and positive number, the function approaches the value L.Īlso the limit as x approaches negative infinity, the value of c is a very large and negative number, is expressed below. The following expression states that as x approaches the value c and x < c the function approaches the value L. The following expression states that as x approaches the value c and x > c the function approaches the value L. The following expression states that as x approaches the value c the function approaches the value L.

This value can be any point on the number line and often limits are evaluated as an argument approaches infinity or minus infinity. The limit is a method of evaluating an expression as an argument approaches a value.