public static void Main()
double fx=0, Slnyx=0,Slny=0, Sx=0,Sx2=0, Px=0,Plny=0, a=0, b=0;
double[] x = new double[30] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30};
double[] y = new double[30] { 1, 3, 4, 5, 5, 5, 5, 5, 6, 7, 7, 7, 7, 11, 15, 26, 41, 53, 82, 93, 118, 164, 203, 251, 316, 367, 405, 475, 585, 717};
for (int i = 0; i < n; i++)
Slny = Slny + Math.Log(y[i]);
Slnyx = Slnyx + (Math.Log(y[i]) * x[i]);
Sx2 = Sx2 + (x[i] * x[i]);
b = ((n * Slnyx) - (Sx * Slny)) / ((n * Sx2) - (Sx * Sx));
a = Math.Exp(Plny - (b * Px));
Console.WriteLine("La ecuacion de tendencia exponencial es:");
Console.WriteLine("f(COVID-19)=" + a + "e^(" + b + "x)");
Console.WriteLine("Indíca el día del que deseas conocer el número de infectados de COVID-19:");
double A = double.Parse(Console.ReadLine());
Console.WriteLine("Infectados: " + fx);
double Fx2, Slnyx2=0, Slny2=0, Sx3=0, Sx23=0, Px2=0, Plny2=0, a2=0, b2=0;
double[] x2 = new double[30] {21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50};
double[] y2 = new double[30] {2875,3135,3232,3399,3582,3724,3998,4133,4278,4409,4542,4376,4483,4614,4865,5098,5387,5547,5735,5904,6135,6387,6598,6823,7135,7484,7668,7750,7975,8403};
for (int j = 0; j < n2; j++)
Slny2 = Slny2 + Math.Log(y2[j]);
Slnyx2 = Slnyx2 + (Math.Log(y2[j]) * x2[j]);
Sx23 = Sx23 + (x2[j] * x2[j]);
b2 = ((n2 * Slnyx2) - (Sx3 * Slny2)) / ((n2 * Sx23) - (Sx3 * Sx3));
a2 = Math.Exp(Plny2 - (b2 * Px2));
Console.WriteLine("La ecuacion de tendencia exponencial es:");
Console.WriteLine("f(x)=" + a2 + "e^(" + b2 + "x)");
Console.WriteLine("Indíca el día del que deseas conocer el número de infectados de EBOLA:");
double A2 = double.Parse(Console.ReadLine());
Fx2= a2 * (Math.Exp(b2*A2));
Console.WriteLine("Infectados: " + Fx2);
double fx3=0, Slnzw2=0, Slnz2=0, Sw3=0, Sw23=0, Pw2=0, Plnz2=0, f2=0, g2=0;
double[] w2 = new double[27] {7,14,21,28,35,42,49,56,63,70,77,91,105,112,126,133,140,147,154,161,168,175,182,189,196,203,210};
double[] z2 = new double[27] {25,367,2500,7520,11168,15510,21940,29690,44787,59814,89921,134503,162308,182166,209438,254206,277707,296471,318925,343298,378223,399232,414945,441661,482300,503536,525060};
for (int j = 0; j < d2; j++)
Slnz2 = Slnz2 + Math.Log(z2[j]);
Slnzw2 = Slnzw2 + (Math.Log(z2[j]) * w2[j]);
Sw23 = Sw23 + (w2[j] * w2[j]);
g2 = ((d2 * Slnzw2) - (Sw3 * Slnz2)) / ((d2 * Sw23) - (Sw3 * Sw3));
f2 = Math.Exp(Plnz2 - (g2 * Pw2));
Console.WriteLine("La ecuacion de tendencia exponencial es:");
Console.WriteLine("f(x)=" + f2 + "e^(" + g2 + "x)");
Console.WriteLine("Indíca el día del que deseas conocer el número de infectados de H1N1:");
double A3 = double.Parse(Console.ReadLine());
fx3= f2 * (Math.Exp(g2*A3));
Console.WriteLine("Infectados: " + fx3);