When the matrices AB and BA are invertible if A and B are rectangular matrices?

CSIR NET 2022 UPDATE WITH EXAM DATE | 3 CSIR EXAMS in CSIR 2022 | CSIR NET LATEST UPDATE | CSIR 2021

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When the matrices AB and BA are invertible if A and B are rectangular matrices?

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NBHM PHD EXAM PREVIOUS YEAR IMPORTANT QUESTIONS AND SOLUTIONS - PART 4

NBHM PHD EXAM PREVIOUS YEAR IMPORTANT QUESTIONS AND SOLUTIONS