とも分散 ぶんさん行列 ぎょうれつではありませんでした
tomobunsangyōretsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 共分散行列

1. Was not a covariance matrix.

Past/Perfective
Negative
Polite
Formal Register
Mathematics