# Calculus

A small aircraft starts its descent from an altitude of 1 mile, 4 miles west of the runway.

a) Find the cubic f(x) = ax3 + bx2 + cx + d on the interval [-4,0] that describes a smooth glide path for the landing.
b) If the glide path of the plane is described by the function in part a, when would the plane be descending at the most rapid rate?

I need to show step-by-step work for this problem, so please format your answer as such. This is from the chapter "Applications of Differentiation." Thanks! :)

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1. Sorry, that's f(x) = ax^3 + bx^2 + cx + d

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posted by Jon
2. get beaned

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posted by suck it

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