MathematicsGeneralQuality 92 · Exceptional

Why Matrices Multiply the Way They Do

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Dale HarrisTeacher Tier
@author · 2026-08-31 · v1
7 min read
Matrix multiplication combines linear transformations. When you multiply
ABAB
, each row of
AA
is paired with each column of
BB
via dot products, producing a matrix that represents applying transformation
BB
then
AA
. The order matters because transformations generally don't commute.
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