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Use your derivative tools to write the second derivative, , of each function below.

  1. Start with the quotient Rule.

  2. Use the chain rule.

  3. You could use the quotient rule AND the chain rule...Or you could rewrite y as with exponents and quickly use the Power Rule!

  4. Rewrite y as a piecewise function. The derivative will be a piecewise function as well. So will the second derivative.