For the following quesitons, practice answer the following three parts of
the questions: (a) Find 
(b) Find the slope of the
tangent line at x=1 if possible, and (c) Find the tangent line equation
at x=1.
I shall solve the last problem here and give you some preview of what we will do in chapter 3.
We find 
and 
which means that the tangent line is a horizontal line
which passes through (1, f(1)) or 
thus the tangent line
eqution is 
But let's use this example to discuss further.