% CALCONE_BRUTE Find min of calculus I function by brute force: generate
% millions of values and select smallest.
f = @(x) (x.^2 + cos(x)).^2 - 10.0 * sin(5.0 * x);
N = 2*10^6 + 1;
x = linspace(0.0,2.0,N);
[y, ix] = min(f(x)); % min is an allowed "black box" because its
% implementation is obvious
x(ix)