PROOF 69
Prove.
AB ≠ BA
On matrices.
Definition D1
The sum of two matrices A, B of the same shape is defined by (A + B)ᵢⱼ = Aᵢⱼ + Bᵢⱼ.
Proof.
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PROOF 69
AB ≠ BA
On matrices.
Definition D1
The sum of two matrices A, B of the same shape is defined by (A + B)ᵢⱼ = Aᵢⱼ + Bᵢⱼ.
Proof.
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