DeterminantHard
Question
From the matrix equation AB = AC, we conclude B = C provided :
Options
A.A is singular
B.A is non-singular
C. A is symmetric
D.A is a square
Solution
AB = AC
Pre-multiplying A-1 ⇒ B = C hence A must be invertible matrix.
Pre-multiplying A-1 ⇒ B = C hence A must be invertible matrix.
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