static double IntegrationRectangleGauche(fctAIntegrer f, double bg, double bd, int n)
{
double Aire = 0;
double x = bg;
double p = (bd - bg) / n;
for (int i = 0; i < n; i++)
{
Aire += p * f(x);
x += p;
}
return(Aire);
}
private void btnCosinus_Click(object sender, EventArgs e)
{
double a, b;
int nbInt;
if (double.TryParse(tbGauche.Text, out a) && double.TryParse(tbDroite.Text, out b) && int.TryParse(tbIntervalle.Text, out nbInt))
{
lbResultats.Items.Clear();
fctAIntegrer f = new fctAIntegrer(fctCosins);
for (int i = 0; i < 5; i++)
{
lbResultats.Items.Add("Nb int= " + nbInt + " => " + IntegrationRectangleGauche(f, a, b, nbInt));
nbInt *= 2;
}
}
else
{
MessageBox.Show("Verifier vos entrees");
}
}
