A classical problem in the calculus of variations is to find the shape of a curve such
Chapter 3, Problem 10(choose chapter or problem)
A classical problem in the calculus of variations is to find the shape of a curve such that a bead, under the influence of gravity, will slide from point A(0, 0) to point B(x1, y1) in the least time. See Figure 3.R.2. It can be shown that a nonlinear differential for the shape y(x) of the path is y[1 (y)2 ] k, where k is a constant. First solve for dx in terms of y and dy, and then use the substitution y k sin2 u to obtain a parametric form of concentration the solution. The curve turns out to be a cycloid. C(t)
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