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()

Value

[smoof_single_objective_function]