Consider the relation
in terms of and .
You could simplify now, if you choose.
, which you found in part (a), has both and variables. So, before you evaluate, use the original equation to find the -value that corresponds with . It is possible that there will be more than one.
Use a calculator to find the THREE
-values that correspond with .
at those THREE coordinate points.
Find all points where the derivative is undefined.
, will be undefined where the denominator equals .