makeEngvallFunction function

Complex function.

Two-dimensional test function based on the formula [REMOVE_ME]$f(\mathbf{x}) = (x_1^4 + x_2^4 + 2 x_1^2 x_2^2 - 4 x_1 + 3 [REMOVE_ME_2]$

with $\mathbf{x}_1, \mathbf{x}_2 \in [-2000, 2000]$.

makeEngvallFunction()

Returns

[smoof_single_objective_function]

Description

Two-dimensional test function based on the formula

with $\mathbf{x}_1, \mathbf{x}_2 \in [-2000, 2000]$.

References

See https://al-roomi.org/benchmarks/unconstrained/2-dimensions/116-engvall-s-function.