/**
 * This class represents a <a href="https://en.wikipedia.org/wiki/Logistic_function">logistic growth curve</a>, for use in physics calculations where a value chages logarithmically over time.
 */
public class LogisticGrowthCurve {

    private final double capacity, a, b;

    public LogisticGrowthCurve(double capacity, double a, double b) {
        this.capacity = capacity;
        this.a = a;
        this.b = b;
    }

    public double get(double x) {
        return capacity / (1 + Math.exp(a + (b * x)));
    }
}