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ID number:565148
Author:
Evaluation:
Published: 13.10.2009.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Vektors ir orientēts nogrieznis, ko raksturo noteikts garums un vērsums.
Vektorus, kuru moduļi (garumi) un vērsumi ir vienādi, sauc par vienādiem vektoriem.
Vektorus, kuru moduļi (garumi) ir vienādi, bet vērsumi – pretēji, sauc par pretējiem vektoriem.
Pēc trijstūra likuma – saskaitāmos vektorus atliek vienu otra galā
• Pēc paralelograma likuma – saskaitāmos vektorus atliek no kopīga sākumpunkta.
Par divu vektoru a un b starpību sauc tādu vektoru c, pie kura pieskaitot vektoru b, iegūst vektoru a.
Par vektora a reizinājumu ar skaitli k (k≠0) sauc vektoru b, kura modulis vienāds ar k · a, t.i. b = k · a, pie tam
a) vektori a un b ir vienādi vērsti, ja k > 0,
b) vektori a un b ir pretēji vērsti, ja k < 0.
Tas ir vektors, ko iegūst, no vektora galapunktiem pret apskatāmo asi velkot perpendikulus. …

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