вектор
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Transcript of вектор
![Page 1: вектор](https://reader033.fdocument.pub/reader033/viewer/2022052621/558c11eed8b42a076a8b46cb/html5/thumbnails/1.jpg)
![Page 2: вектор](https://reader033.fdocument.pub/reader033/viewer/2022052621/558c11eed8b42a076a8b46cb/html5/thumbnails/2.jpg)
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Отсечка: А х см B
![Page 4: вектор](https://reader033.fdocument.pub/reader033/viewer/2022052621/558c11eed8b42a076a8b46cb/html5/thumbnails/4.jpg)
Определение: Отсечка, на която единият край е приет за първи, а другият за втори се нарича вектор.
А B
Т.е. векторът е насочена отсечка!
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Записва се с помощта на 2 големи латински букви или една малка:
аилиAB
![Page 6: вектор](https://reader033.fdocument.pub/reader033/viewer/2022052621/558c11eed8b42a076a8b46cb/html5/thumbnails/6.jpg)
А B
Векторът има:Начало т.А Край т.BПосокаГолемина : ако отсечката АВ има
дължина а см, то големината на вектор
е: смaAB AB
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![Page 8: вектор](https://reader033.fdocument.pub/reader033/viewer/2022052621/558c11eed8b42a076a8b46cb/html5/thumbnails/8.jpg)
CPAB CPAB
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Нулев вектор – има дължина 0, няма посока.
Всяка точка е нулев вектор!
00
0
AA
AA
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.
,
,
ожнипротивополсасъщо
dиbвекторитеито
ожнипротивопол
саcиaa
dcиbаАко
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baиba
bа
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baиba
bа
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.,
.
точкапроизволнаеОкъдетоаОМпостроисеДа
аАВвектореДаден
ОМ
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D C
M O
A B