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When multiplying two matrices $A$ and $B$ to form $AB$, the transformation represented by the rightmost matrix $B$ acts first on the initial space, followed by the leftmost matrix $A$ acting on the already transformed result.

Conditions: Performing matrix multiplication $AB$; Matrices represent linear spatial transformations; Vectors are treated as column vectors

When multiplying two matrices $A$ and $B$ to form $AB$, the transformation represented by the rightmost matrix $B$ acts first on the initial space, followed by the leftmost matrix $A$ acting on the already transformed result.

Conditions: Performing matrix multiplication $AB$; Matrices represent linear spatial transformations; Vectors are treated as column vectors