重じゅう解かい

noun

multiple root; repeated root

Mathematics term for a root of a polynomial that occurs more than once. Used in algebra and equation solving.

• この方ほう程てい式しきは重じゅう解かいを持もつ。

  This equation has a multiple root.

• 二に次じ方ほう程てい式しきの判はん別べつ式しきがゼロのとき、重じゅう解かいになる。

  When the discriminant of a quadratic equation is zero, it has a repeated root.