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STATEMENT-1 : Matrix [{:(a,0,0,0),(0,b,0...

STATEMENT-1 : Matrix `[{:(a,0,0,0),(0,b,0,0),(0,0,c,0):}]` is a diagonal matrix.
STATEMENT-2 :` A = [a_(ij)]`is a square matrix such that `a_(ij)=0AAi ne j`, then A is called diagonal matrix.

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