public List <GraphPoint> Imlicite()
{
var tempResult = new double[N + 1][];
for (int i = 0; i <= N; i++)
{
tempResult[i] = new double[K + 1];
}
// initialize board conditions
for (int i = 0; i <= N; i++)
{
tempResult[i][0] = U0.Value(XArg(i));
}
for (int n = 0; n <= K - 1; n++)
{
tempResult[0][n + 1] = U1.Value(TimeArg(n + 1));
tempResult[N][n + 1] = U2.Value(TimeArg(n + 1));
}
for (int n = 0; n < K; n++)
{
for (int i = 1; i < N; i++)
{
tempResult[i][n + 1] = tempResult[i][n] +
Gamma * (tempResult[i + 1][n] - 2 * tempResult[i][n] + tempResult[i - 1][n]) +
Tao * Fxt.Value(XArg(i), TimeArg(n));
}
}
var result = new List <GraphPoint>();
for (int i = 0; i <= N; i++)
{
result.Add(new GraphPoint
{
X = XArg(i),
Y = tempResult[i][K]
});
}
return(result);
}
public List <GraphPoint> NotImplicite()
{
var tempResult = new double[N + 1][];
for (int i = 0; i <= N; i++)
{
tempResult[i] = new double[K + 1];
}
// initialize board conditions
for (int i = 0; i <= N; i++)
{
tempResult[i][0] = U0.Value(XArg(i));
}
for (int n = 0; n <= K - 1; n++)
{
tempResult[0][n + 1] = U1.Value(TimeArg(n + 1));
tempResult[N][n + 1] = U2.Value(TimeArg(n + 1));
}
var A = new double[N - 2];
var B = new double[N - 2];
var C = new double[N - 2];
var D = new double[N - 2];
double xi1, xi2, mu1, mu2;
for (int i = 1; i <= N - 1 - 2; i++)
{
A[i] = Gamma;
B[i] = Gamma;
C[i] = (1 + 2 * Gamma);
}
for (int n = 0; n <= K - 1; n++)
{
for (int i = 2; i <= N - 1 - 1; i++)
{
D[i - 1] = tempResult[i][n] + Tao * Fxt.Value(XArg(i), TimeArg(n));
}
xi1 = Gamma / (1 + 2 * Gamma);
mu1 = (tempResult[1][n] + Tao * Fxt.Value(XArg(1), TimeArg(n)) + Gamma * tempResult[0][n]) / (1 + 2 * Gamma);
xi2 = Gamma / (1 + 2 * Gamma);
mu2 = (tempResult[N - 1][n] + Tao * Fxt.Value(XArg(N - 1), TimeArg(n)) + Gamma * tempResult[N][n]) / (1 + 2 * Gamma);
var tempY = MetodProgonki(N - 2, A, B, C, D, xi1, mu1, xi2, mu2);
for (int i = 1; i <= N - 1; i++)
{
tempResult[i][n + 1] = tempY[i - 1];
}
}
var result = new List <GraphPoint>();
for (int i = 0; i <= N; i++)
{
result.Add(new GraphPoint
{
X = XArg(i),
Y = tempResult[i][K]
});
}
return(result);
}