虚数単位

Meanings

1. Noun

   imaginary unit

• 𝑥² = −1 となる数 ��（実数ではない）を sqrt(−1) または i と記しるしてして虚数きょすうたんい単位とという言う。

  When x² = −1, the number x (which is not a real number) is written as "sqrt(−1)" or "i", and is called the imaginary unit.