Дано векторы [tex]\vec{c}(2\sqrt{3};-6;1)[/tex] и [tex]\vec{d}(0;3;4).[/tex]
1. Найдите длину вектора [tex]\vec{c}.[/tex]
2. Найдите скалярное произведение векторов [tex]\vec{c}[/tex] и [tex]\vec{d}.[/tex]
50 БАЛЛОВ!!!!!
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