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.
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Residents of Kabul's District 6 were awakened abruptly on Thursday night by the sound of an explosion that shook their homes. They rushed out in the street and heard jets flying overhead.