MATH 221 Assignment on the Derivative. (Due Friday, September 14)
1. Using the limit
definition of the derivative: 
, compute 
for each of the
following:
a) 
b) 
c) 
d) 
2. Find the equation
of the tangent line to the graph of 
at the point corresponding to x = -2.
3. Find the equation
of the tangent line to the graph of 
at the point
corresponding to x = 4.
4. Find all points on
the graph of 
such that the tangent
lines at those points are perpendicular to the line y = x+1. Find the equations of those tangent lines.