Скачать или смотреть Applications of the dot product to planar geometry I | Wild Linear Algebra A 29 | NJ Wildberger

The dot product, or inner product, is the main source of metrical structure for planar Euclidean geometry when we work in the framework of linear algebra. In this video we show how it leads to the idea of a linear functional, how it gives us a direct and geometrical understanding of lines via normal vectors, and how to work with projections.

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