test initial clasa a12 a
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test initial clasa a12 a

by Iuliana Cristina Niculaie

Grup Scolar de Transporturi Auto Catedra de Matematica Test initial-clasa a XII-a 1) Fie D(x,y)= 111 1 111 ++ yx yx , unde x,y∈Z . a) Calculati D(-1,1) . 1 p b) Aflati x∈Z , pentru care D(x,2010)=1 . 1 p c) Aratati ca : D(x,y)∗ D(x,-y)=D(x 2 ,y 2 ) . 1... More

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