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对此，波波倒是很坦然：“我家庭条件不好，本来就是从零开始的，大不了再回到零，没什么大不了。”
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.
Фото: Артем Соболев / Коммерсантъ