Week 3-2
2020-03-31 本文已影响0人
忻恆
a set of vectors span a vector space.
vector subspace
the basis 基 of a vector space is a set of minimum number of vectors that span the space.
orthonormal:orthogonal and normalized
dimension:the number of basis
Gram-Schmidt process
an algorithm for constructing an orthonormal basis for a vector space.
将向量空间的基变成 orthonormal basis。
The first step: find an orthogonal basis
向量点乘公式:
向量叉乘公式:
求得垂直于 两个向量的 法向量
The seconde step : normalize
the span of 前 k 个 u 向量 等于 前 k 个 v 向量