とも分散 ぶんさん行列 ぎょうれつじゃありませんでした
tomobunsangyōretsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 共分散行列

1. Was not a covariance matrix.

Past/Perfective
Negative
Polite
Terminal Form
Mathematics