package org.drip.zen.equation; public class MathematicalFunction { public static double QuadraticExpression (double a, double b, double c, double x) { double expressionValue = a * x * x + b * x + c; return expressionValue; } public static double TrigonometricExpression (double sum, double x) { double functionValue = Math.cos (x) + Math.sin (x) - sum; return functionValue; } }