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Home > CALC > Chapter 3 > Lesson 3.4.1 > Problem 3-155
3-155.
Re-examine your graph of
As accurately as possible, draw a tangent to
at . Estimate its slope. The tangent line should look vertical. What is the slope of a vertical line?
According to your derivative,
, what is the slope of the tangent at ? Refer to hints in problem 3-154.