Quadratic Equation Roots

Quadratic Equation Roots


一元二次方程表示为 ax2 + bx + c = 0.求它的根(y = 0 的 x 值)的一般公式是 :


这个公式提供了两个根: x1, x2.平方根内的值 b2-4ac称为判别式 (D)。根据判别式的值,一元二次方程可以有 :

  • 两个不同的实数根 (D> 0);
  • 一个实数根 (D = 0);
  • 没有实数根 (D < 0)。

您的代码必须返回Iterable ,其中包含两个值:根 x1, x2,按降序排序。如果只有一个实数根,两个值将相同。如果没有实数根,Iterable 应包含字符串"No real roots"


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