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makarovadaryam
@makarovadaryam
October 2021
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При каком значении m векторы a(4;m-1;m) и b(-2;4;3-m) перпендикулярны
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ejie1997
Verified answer
Скалярное произведение равно 0.
4*(-2)+4*(m-1)+m(3-m)=0
-8+4m-4+3m-m²=0
-m²+7m-12=0
m²-7m+12=0
D=49-4*12=1²
m1=4 m2=3
Ответ 4, 3
29 votes
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Answers & Comments
Verified answer
Скалярное произведение равно 0.4*(-2)+4*(m-1)+m(3-m)=0
-8+4m-4+3m-m²=0
-m²+7m-12=0
m²-7m+12=0
D=49-4*12=1²
m1=4 m2=3
Ответ 4, 3