Part 1: The derivative at a specific point
Use the definition of the derviative to compute the derivative of at the specific point . Evaluate the limit by using algebra to simplify the difference quotient (in first answer box) and then evaluating the limit (in the second answer box).
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Hint: use the
conjugate trick.
Part 2: The derivative function
Part 3: The tangent line
You can earn partial credit on this problem.