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The rank is equal to the number of pivots in the echelon form. Once the matrix is reduced to echelon form, you simply count the pivot positions; every entry need not be reduced further once pivots are clear.
Conditions: The matrix has been reduced to echelon form.; Pivots are clearly identifiable.
YouTubeThe rank of a matrix
16:30 – 17:17Watch this moment ↗
The rank is equal to the number of pivots in the echelon form. Once the matrix is reduced to echelon form, you simply count the pivot positions; every entry need not be reduced further once pivots are clear.
Conditions: The matrix has been reduced to echelon form.; Pivots are clearly identifiable.
YouTubeThe rank of a matrix
16:30 – 17:17Watch this moment ↗