Lecture 13 (Mar 23)
Null space, row space and column space.
Elementary row operations will not change the row space and the null space, but will change the column space.
rank(A)=dim(row space of A)=dim(column space of A)
Column space of A= span(pivoting columns of A)
Elementary row operations will not change the row space and the null space, but will change the column space.
rank(A)=dim(row space of A)=dim(column space of A)
Column space of A= span(pivoting columns of A)
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