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if a diagonal matrix is commutative with every matrix of the same order,then it is necessarily a ______ matrix a. zero matrix b. unit matrix c. scalar matrix d. a symmetric matrix the ans is c... please explain how?... @Mathematics

  • 2 years ago
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  1. anusha_anu
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    i need explanation please... i have the key...

    • 2 years ago
  2. crazyjairam
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    consider a general diagonal matrix to be A=[a 0,0,b] and other matrix B=[w x , y z] then compute AB then BA and then equate both which will you a=b which is a scalar matrix ....

    • 2 years ago
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