If U 1 , U 2 are upper triangular and L 1 , L 2 are lower

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If U₁, U₂ are upper triangular and L₁, L₂ are lower triangular, which of the following are triangular?

U₁ + U₂, U₁U₂, U₁², U₁ + L₁, U₁L₁, L₁ + L₂

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Advanced Engineering Mathematics

ISBN: 978-0470458365

10th edition

Authors: Erwin Kreyszig

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Question Posted: Dec 04, 2018 07:40 AM

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If U 1 , U 2 are upper triangular and L 1 , L 2 are lower

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Advanced Engineering Mathematics

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