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Without your calculator, evaluate each limit. 

  1. There is either a hole or a vertical asymptote at . If there is a hole, then the will cancel out.... and the limit will approach a finite value. If there is a vertical asymptote, then the will not cancel out... and the limit will not exist. Simplify the numerator to see if the limit exists.

  2. Refer to the hint in part (a).

Compute without a calculator