Question

Which of the following functions f has a removable discontinuity at a? If the discontinuity is removable, find a function g that agrees with f for x does not equal a and is continuous at a. (a) f(x)= x^4-1/x-1, a=1

Answer 1

factor and cancel is what this is really asking

Answer 2

So the function is:
\[ f(x)=\frac{x^4-1}{x-1}\]
correct?

Answer 3

Bingo... follow satellite's advice :D

Answer 4

Yes I had to factor and cancel...thank you