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(15) If A = 3 4 1 B = (5 37 then ve...
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(15) If A = 3 4 1 B = (5 37 then verify that (AB) = BAS
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(2) it is verified From eq ( ^{n} ) (1) 8 that ( (A B)^{1}=B^{prime} A^{prime} )
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