It has been something like 5 years since I've done any calc and so I was wondering if there were any smart people who can answer these questions >_>
Let f(x) be the function defined by f(x) = 2x^3 - 3x^2 - 12x + 20
(a) Write an equation of the line normal to the graph of f(x) at x=0
(b) find the x- and y- coordinates of all poitns on the graph of f(x) where the line tangent to the graph is parallel to the x-axis
(c) sketch the graph of f with the line(s) tagnent to the point(s) that you found from part b.
I'm trying to wrestle through this and like 8 other problems and I really haven't touched the subject in too long. Does anyone know how to do this stuff still?
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