import com.imsl.math.*;

public class MinUnconMultiVarEx1 {
    public static void main(String args[]) throws Exception {
        MinUnconMultiVar solver = new MinUnconMultiVar(2);
        solver.setGuess(new double[]{-1.2, 1.0});
        double x[] = solver.computeMin(new MinUnconMultiVar.Function() {
            public double f(double[] x) {
                return 100.*((x[1] - x[0] * x[0]) * (x[1] - x[0] * x[0])) +
                (1. - x[0]) * (1. - x[0]);
            }
        });
        System.out.println("Minimum point is (" +x[0] +", "+x[1]+")");
    }
}