public static double SecantMethod(nonLinearEquationFunction f, double a, double b, double epsilon)
{
double x1 = a;
double x2 = b;
double fb = f(b);
while (Math.Abs(f(x2)) > epsilon)
{
double mpoint = x2 - (x2 - x1) * fb / (fb - f(x1));
x1 = x2;
x2 = mpoint;
fb = f(x2);
}
return x2;
}
public static double NewtonRaphsonMethod(nonLinearEquationFunction f, nonLinearEquationFunction fprime, double x0, double epsilon)
{
double f0 = f(x0);
double x = x0;
while (Math.Abs(f(x)) > epsilon)
{
x -= f0/fprime(x);
f0 = f(x);
}
return x;
}