public RungeKutta
(DifEquationSystem equation, Dictionary <string, FloatingPoint> initialCondition, double[] section, int divisions)
{
Equation = equation;
InitialСondition = initialCondition;
Section = section;
Divisions = divisions;
Step = CalculateStep();
}
static void Main(string[] args)
{
var x = Expr.Variable("x");
var y1 = Expr.Variable("y1");
var y2 = Expr.Variable("y2");
//Example 1
Dictionary <string, FloatingPoint> initialVal1 = new Dictionary <string, FloatingPoint>()
{
{ "x", 0 },
{ "y1", 3 },
{ "y2", 0 }
};
Expr func1 = (-2 * y1 + 4 * y2);
Expr func2 = (-y1 + 3 * y2);
var functions = new List <Expr>();
functions.Add(func1);
functions.Add(func2);
DifEquationSystem equation1 =
new DifEquationSystem(functions);
double[] section1 = new double[] { 0, 1 };
RungeKutta rungeKutta1 =
new RungeKutta(equation1, initialVal1, section1, 10);
Func <double, double> answer1 = (4 * (-x).Exp() - (2 * x).Exp()).Compile("x");
Func <double, double> answer2 = ((-x).Exp() - (2 * x).Exp()).Compile("x");
var answers = new List <Func <double, double> >();
answers.Add(answer1);
answers.Add(answer2);
rungeKutta1.Solve();
PrintRealAnswer(answers, initialVal1, section1, 10);
Console.ReadKey();
}
