The above function tells us that the graph generally follows the function f(x)=x^2-1 except for at the point x=4. When we graph it, we will need to draw a little open circle at the point on the graph and mark that it equals 2 at that point. This is a created discontinuity. If...
For example, in the function ##f(x) = \frac{(x-1)(x+2)}{x-1}##, the factor of (x-1) cancels out, resulting in a removable discontinuity at x = 1. How do you find the limit of a function at a removable discontinuity?To find the limit of a function at a removable...