INSANE Hack to Find Span of Any Vectors [Passing Linear Algebra]

Описание к видео INSANE Hack to Find Span of Any Vectors [Passing Linear Algebra]

Put the vectors in a matrix, row reduce, and the number of pivots you get is the dimension of the span of the vectors.
First video introducing spans:    • What is Spans [Passing Linear Algebra]  

At 2:33, the bottom right entry of the row reduced matrix should be -7; however, this doesn't affect our final answer.

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