2 Matching Annotations
  1. Nov 2023
  2. math.libretexts.org math.libretexts.org
    1.5: Rank and Homogeneous Systems
    2
    1. KAmaral 04 Nov 2023
      number rrr of leading entries of AAA

      The number of leading entries is the rank of the matrix. So this is also the number of nozero rows in the row-echelon form, right?

    2. KAmaral 04 Nov 2023
      A remarkable result of this section

      Why is this remarkable? We just saw that when there are free variables all solutions can found by selecting any values for the free variables we want and then calculating the remaining variables(s). That is a linear combination, no?

    Visit annotations in context

    Annotators

    URL

    math.libretexts.org/Courses/Lake_Tahoe_Community_College/A_First_Course_in_Linear_Algebra_(Kuttler)/01:_Systems_of_Equations/1.05:_Rank_and_Homogeneous_Systems