ぎゃくフーリエ変換 へんかんじゃなかったです
gyakufūriehenkanjanakattadesu

Noun
Desu Copula

The polite, past negative form of 逆フーリエ変換

1. Wasn't an inverse Fourier transform.

Past/Perfective
Negative
Polite
Casual Register
Mathematics