Help on query formulation
On a competition problem. (Asupra unor probleme de concurs.) (Romanian. English summary)
Gaz. Mat., Ser. B 117, No. 6-8, 284-291 (2012).
Summary: This note illustrates a technique, consisting in ‘combining’ the columns of two matrices, which may be used in solving some algebra problems regarding determinants, submitted in recent Romanian contests.
Classification: U40 H60
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