If $ A $ is $ 3 \times 4 $ matrix and $ B $ is a matrix such that $ A^{\prime} B $ and $ B A^{\prime} $ are both defined, then $ B $ is of the type

Question

If $ A $ is $ 3 \times 4 $ matrix and $ B $ is a matrix such that $ A^{\prime} B $ and $ B A^{\prime} $ are both defined, then $ B $ is of the type, $ 3 \times 4 $, ( $ 3 \times 3 $, $ 4 \times 4 $, $ 4 \times 3 $

MARKS App · Accepted Answer

Given that A is 3 × 4 matrix and A ′ B = BA ′ Then B is also 3 × 4 matrix

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