
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.