Implementation of 2-dimensional Freudenstein Roth function.
freudenstein_roth_func(x)The value of the function.
numeric or complex vector.
On an 2-dimensional domain it is defined by
f(x) = (x_1 - 13 + ((5 - x_2)x_2 - 2)x_2)^2 + (x_1 - 29 + ((x_2 + 1)x_2 - 14)x_2)^2f(x) = (x_1 - 13 + ((5 - x_2)x_2 - 2)x_2)^2 + (x_1 - 29 + ((x_2 + 1)x_2 - 14)x_2)^2 and is usually evaluated on x_i [ -10, 10 ]x_i in [ -10, 10 ], for all i=1,2i=1,2. The function has one global minimum at f(x) = 0f(x) = 0 for x = [ 5, 4 ]x = [ 5, 4 ].
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