天气预报 > 教育 > 向量模的加法减法公式
向量模的加法减法公式
更新时间: 2021-05-06 23:07:48  

坐标向量加减法:在直角坐标系里面,定义原点为向量的起点。两个向量和与差的坐标分别等于这两个向量相应坐标的和与差若向量的表示为(x,y)形式:A(X1,Y1) B(X2,Y2),则A + B=(X1+X2,Y1+Y2),A - B=(X1-X2,Y1-Y2)

关键词: 向量 加法 减法 公式

向量模的加法减法公式相关经验

天气预报

最新推荐

页面:/news/view-3225952/ | 耗时:0.6439 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=3225952 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3225952 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3225952 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(371019,359278,372490,1122328,361895,358185,1083151,366243,3255728,374030,1122372,86849,358637,87085,360324,362699,370883,376426,376023,359912,1093961,1086214,374237,360410,369507,365096,837461,1093851,370022,1108534) ORDER BY field (ArticleID,371019,359278,372490,1122328,361895,358185,1083151,366243,3255728,374030,1122372,86849,358637,87085,360324,362699,370883,376426,376023,359912,1093961,1086214,374237,360410,369507,365096,837461,1093851,370022,1108534)