posted by Maya .
1. For what value(s) of x is f(x) = (x-1) / (x^2 - 1) discontinuous?
2.) f(x) = (1)/(x^2) is continuous for all real numbers EXCEPT:
b. x=1 only
c. x=1 and x=-1
d. x=-1 only
look at example 2:
1. hint: removable discontinuity