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Home > CALC > Chapter 3 > Lesson 3.4.4 > Problem 3-187

3-187.

Expand the numerator.
Combine like terms.
Factor out an h.
Cancel out the h.
Evaluate the limit h→0.... this is f '(x).

Graph that on your calculator. Also sketch the derivative function you found in part (a). The sketches should look a lot alike.