Предмет: Алгебра, автор: sega1997skorohod

При каком значении n векторы а(3; - 1; 2) и b(n; 2; -0,5) перпендикулярны?

Ответы

Автор ответа: table123

Ответ: 1

Объяснение:

a*b=3*n+(-1)*2+2*(-0,5)=0, 3n-2-1=0, 3n=3, n=1

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