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Evaluate each limit. If the limit does not exist due to a vertical asymptote, then add an approach statement stating if is approaching negative or positive infinity.

  1. As with all limits where or ,compare the highest-power term in the numerator with the highest-power term in the denominator. Be sure to consider coefficients.

  1. This is Ana's method to find a derivative. If you need more guidance, refer to the hints in problem 3-110 part (b).

    Or you could multiply the numerator and the denominator by the conjugate of .

  1. When you evaluate at , there is a in the denominator. Perhaps you can cancel it out. Try factoring.

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