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Question Number 168859 by Shrinava last updated on 19/Apr/22

Prove that:  1. A + B^(−)  = A^(−)  ∙ B^(−)    ,   AB^(−)  = A^(−)  + B^(−)   2. (A + C)(B + C) = AB + C

Provethat:1.A+B=AB,AB=A+B2.(A+C)(B+C)=AB+C

Answered by Rasheed.Sindhi last updated on 19/Apr/22

1.  A+B^(−) =A^− ∙B^(−)    determinant ((A,B,(A+B),(A+B^(−) ),A^− ,B^− ,(A^− ∙B^(−) )),(0,0,(    0),(    1),1,1,(   1)),(0,1,(    1),(    0),1,0,(   0)),(1,0,(    1),(    0),0,1,(   0)),(1,1,(    1),(    0),0,0,(   0)))   A∙B^(−) =A^− +B^(−)    determinant ((A,B,(A∙B),(A∙B^(−) ),A^− ,B^− ,(A^− +B^(−) )),(0,0,(    0),(    1),1,1,(   1)),(0,1,(    0),(    1),1,0,(   1)),(1,0,(    0),(    1),0,1,(   1)),(1,1,(    1),(    0),0,0,(   0)))   2.  (A+C)(B+C)=AB+C    determinant ((A,B,C,(A+C),(B+C),((A+C)(B+C)),(AB),(AB+C)),(0,0,0,(   0),(   0),(          0),(  0),(    0)),(0,0,1,(   1),(   1),(          1),(  0),(    1)),(0,1,0,(   0),(   1),(          0),(  0),(    0)),(0,1,1,(   1),(   1),(          1),(  0),(    1)),(1,0,0,(   1),(   0),(          0),(  0),(    0)),(1,0,1,(   1),(   1),(          1),(  0),(    1)),(1,1,0,(   1),(   1),(          1),(  1),(    1)),(1,1,1,(   1),(    1),(          1),(  1),(    1)))

1.A+B=ABABA+BA+BABAB0001111011010010100101110000AB=A+BABABABABA+B00011110101101100101111100002.(A+C)(B+C)=AB+CABCA+CB+C(A+C)(B+C)ABAB+C0000000000111101010010000111110110010000101111011101111111111111

Commented by Shrinava last updated on 19/Apr/22

perfect thankyou sir

perfectthankyousir

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