Consider the function is $\"\"$ .

The function $\"\"$ has a removable discontinuity at $\"\"$ .

This discontinuity can be eliminated by redefining the function at that point.

Let $\"\"$ .

By eliminating the discontinuity, the redefined function $\"\"$ is defined for all values of $\"\"$ .

The function $\"\"$ has removable discontinuity at $\"\"$ .

By eliminating the discontinuity, the redefined function $\"\"$ is defined for all values of $\"\"$ .