Відомо, що E[X]=1, E[X]=3, Var[X]=4, Var[Y]=1, Cov [X,Y]=1. Знайти Var[X+2Y]
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Відомо, що E[X]=1, E[X]=3, Var[X]=4, Var[Y]=1, Cov [X,Y]=1. Знайти Var[X+2Y]
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