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Solved Examples for JEE: Matrices | JEE Main & Advanced Mock Test Series PDF Download

Solved Examples for JEE: Matrices | JEE Main & Advanced Mock Test Series
Solved Examples for JEE: Matrices | JEE Main & Advanced Mock Test Series

Solved Examples for JEE: Matrices | JEE Main & Advanced Mock Test Series

Illustration 3: If A and B are square matrices of equal degree, then which of the following is correct? (1995)
1. A+B = B+A
2. A+B = A-B
3. A-B = B-A
4. AB = BA
Solution:Since A and B are square matrices and are also of equal degree so the addition must be commutative.
Hence, we must have A+B = B+A.

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