This function is based on the formula $$f(\mathbf{x}) = (\mathbf{x}_1^2 + \mathbf{x}_2 - 10)^2 + (\mathbf{x}_1 + \mathbf{x}_2^2 - 7)^2 + (\mathbf{x}_1^2 + \mathbf{x}_2^3 - 1)^2$$ subject to \(\mathbf{x}_i \in [-500, 500], i = 1, 2\).
makeElAttarVidyasagarDuttaFunction()[smoof_single_objective_function]
R. A. El-Attar, M. Vidyasagar, S. R. K. Dutta, An Algorithm for II-norm Minimiza- tion With Application to Nonlinear II-approximation, SIAM Journal on Numverical Analysis, vol. 16, no. 1, pp. 70-86, 1979.