A function is said to have a removable discontinuity at if both of the following conditions hold:
  1. is either not defined or not continuous at .

  2. could either be defined or redefined so that the new function is continuous at .

Show that has a removable discontinuity at by

(a) verifying (1) in the definition above, and then

(b) verifying (2) in the definition above by determining a value of that would make continuous at .

would make continuous at .