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При каких значениях х и z векторы а(3;2;4) и в(х;-5;z) колиниарные?
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Предмет:
Геометрия -
Автор:
sabinem3jx - 6 лет назад
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Ответы 1
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a1/b1=a2/b2=a3/b3 по условию коллинеарности векторов проверяем: 3/х=2/-5=4/z, используя пропорцию получаем х=-7,5,z=-10
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Автор:
arnaldo - 6 лет назад
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Text: THE HISTORY OF KAZAKHSTAN
Kazakhstan, officially Republic of Kazakhstan, has the population of 15,186,000 people and territory 2,719,500 sq km, is situated in central Asia. It borders on Siberian Russia in the north, China in the east, Kyrgyzstan, Uzbekistan, and Turkmenistan in the south, and the Caspian Sea and European Russia in the west. Astana is the capital and Almaty (Alma-Ata) is the largest city. Other major cities include Shymkent, Semey, Aqtobe, and Oskemen.
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The population of Kazakhstan consists mainly of Muslim Kazakhs and Russians; there are smaller minorities of Ukrainians, Germans, Uzbeks, and Tatars. Kazakh, a Turkic language, is the official tongue, but Russian is still widely used.
Despite Kazakhstan's largely arid conditions, its vast steppes accommodate both livestock and grain production. Wheat, cotton, sugar beets, and tobacco are the main crops. The raising of cattle and sheep is also important, and Kazakhstan produces much wool and meat. In addition, there are rich fishing grounds, famous for their caviar-producing sturgeon, in the Caspian, although these have been hurt by overfishing.
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