幾き何か級きゅう数すう

noun

geometric series

Mathematical term for a series where each term is multiplied by a constant ratio. Used in algebra, calculus, and finance.

• 幾き何か級きゅう数すうは、初しょ項こうと公こう比ひによって決きまる。

  A geometric series is determined by its first term and common ratio.

• この問もん題だいでは、無む限げん幾き何か級きゅう数すうの和わを求もとめる必ひつ要ようがある。

  In this problem, you need to find the sum of an infinite geometric series.