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上 うえ三角 さんかく行列 ぎょうれつだった
uesankakugyōretsudatta

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Noun
, 
Da Copula

The past form of 上三角行列

1. Was an upper triangular matrix.

Past/Perfective
, 
Mathematics

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上三角行列だった

上三角行列だった【うえさんかくぎょうれつだった】 Activity

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