September 2021 0 8 Report
В трапеции ABCD основание AD в 3 раза больше основания BC. На стороне AD отмечена точка О, такая, что AО=(5/8)AD. Выразите векторы СО, ОD и ВС через векторы а=ВА и b=CD. СО= (?/?)а+(?/?)b
OD= -(?/?)а+(?/?)b
BC = -(?/?)а+(?/?)b
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