powered by
Two-dimensional test function based on the formula $$f(\mathbf{x}) = (x_1^2 + x_2^2 - 2)^2 + (x_1^2 - x_2^2 - 1)^2$$ with \(\mathbf{x}_1, \mathbf{x}_2 \in [-3, 4]\).
makeKearfottFunction()
[smoof_single_objective_function]
smoof_single_objective_function
See https://al-roomi.org/benchmarks/unconstrained/2-dimensions/59-kearfott-s-function.