The concept of the 101 algorithm in the second edition of the Shanghai Higher Education Edition 3. Review the basic theorem of plane vectors: If e1 and e2 are two non-collinear vectors in the same plane, then for any vector a in this plane, there are only For real numbers λ1 and λ2 such that a = λ1 e1 + λ2 e2. Two non-collinear vectors e1 and e2 are called a set of basis for all vectors in this plane.
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