static void Main(string[] args)
{
Function f = new Function((x, y) => Math.Sin(x) - Math.Cos(y));
EulerModified eulerM = new EulerModified(f, 0, 1, 1, 5);
EulerSimple eulerS = new EulerSimple(f, 0, 1, 1, 5);
RungeKutta4 rk4 = new RungeKutta4(f, 0, 1, 1, 5);
double[,] MAT = new double[, ] {
{ 1, 23, 32, 1 }, { 1, 5, 1, 1 }, { 32, 1, 1, 1 }, { 1, 10, 1, 1 }
};
// double[,] MAT = new double[,] { { 3 ,0 ,2 }, { 2,0,-2 }, { 0,1,1 } };
MatrixInverse MATINV = new MatrixInverse();
MAT = MATINV.InvMatrix(MAT, 4);
double[,] EQU = new double[, ] {
{ 1, 2, -1 }, { 3, 5, -1 }, { -2, -1, -2 }
};
double[] ANS = new double[] { 6, 2, 4 };
MatInvMethod SOLVER = new MatInvMethod();
SOLVER.MatrixInverseMethod(EQU, ANS, 3);
double[] result = SOLVER.GetSolution();
}
/// <summary>
/// Solve N Linear Equations [A][x]=[B] using Matrix Inverse Method
/// http://www.intmath.com/matrices-determinants/6-matrices-linear-equations.php
/// </summary>
/// Coded by : ahmed osama ([email protected])
/// <summary>
/// Parameters of entries:
/// </summary>
/// <param name="A">Coeff. Array N x N , </param>
/// <param name="B">Ans. array N item </param>
/// <param name="N">No. of Linear Equations </param>
///
public void MatrixInverseMethod(double [,] A, double [] B, int N)
{
double [,] tmp;
result = new double[N];
MatrixInverse MATINV = new MatrixInverse();
tmp = MATINV.InvMatrix(A, N);
for (int R = 0; R < N; R++)
{
for (int C = 0; C < N; C++)
{
result[R] = result[R] + tmp[R, C] * B[C];
}
}
}
