Musterlösungen

Funktion wurzel

void main() {
  print(wurzel(9.1));
}
double abs(double x) => x < 0 ? -x : x;
double wurzel(double a){
  var x = a;
  var diff = 0.0;
  var counter = 10;
  do {
    final xneu = 1 / 2 * (x + a / x);
    diff = abs(x - xneu);
    print('x: $x xneu: $xneu $diff');
    x = xneu;
  } while(diff > a / 1000 && --counter > 0);
  return x;
}