翻訳と辞書 Words near each other ・ Direction Nationale de l'Alphabétisation Fonctionelle et de la Linguistique Appliquée ・ Direction Nationale du Contrôle de Gestion ・ Direction Nationale du Renseignement et des Enquêtes Douanières ・ Direction of arrival ・ Direction of fit ・ Direction of Love ・ Direction of movement (ballroom dancing) ・ Direction of Things to Come ・ Direction ov Travel ・ Direction Reaction Creation ・ Direction Records ・ Direction Records (Bobby Darin's label) ・ Direction Records (British label) ・ Direction Régionale de Police Judiciaire de Paris ・ Direction régionale des affaires culturelles ・ Direction vector ・ Direction – Social Democracy ・ Direction, position, or indication sign ・ Directional antenna ・ Directional boring ・ Directional control valve ・ Directional Cubic Convolution Interpolation ・ Directional derivative ・ Directional drilling ・ Directional figure eight ・ Directional Infrared Counter Measures ・ Directional light ・ Directional Recoil Identification from Tracks ・ Directional selection ・ Directional siren Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Direction vector ： ウィキペディア英語版 Direction vector In mathematics, a direction vector that describes a line ''D'' is any vector :$\backslash overrightarrow$ where $A$ and $B$ are two distinct points on the line. If v is a direction vector for ''D'', so is ''k''v for any nonzero scalar ''k''; and these are in fact ''all'' of the direction vectors for the line ''D''. Under some definitions, the direction vector is required to be a unit vector, in which case each line has exactly two direction vectors, which are negatives of each other (equal in magnitude, opposite in direction). ==Parametric equation for a line== In Euclidean space (any number of dimensions), given a point a and a nonzero vector v, a line is defined parametrically by (a+tv), where the parameter ''t'' varies between -∞ and +∞. This line has v as a direction vector. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Direction vector」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.