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。关于这个话题，Line官方版本下载提供了深入分析
Another way to approach the linear combination is to look at it geometrically. This is where the idea of barycentric coordinates can help. A barycentric coordinate system describes the location of a point as the weighted sum of the regular coordinates of the vertices forming a simplex. In other words, it describes a linear combination with respect to a set of points, where in -dimensional space.
不过，该功能入口藏得较深，位于「设备性能」二级菜单下的「互联网速度测试」。