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Let A be 3x3 matrix such that AA=I and |A|=I, find the value of |A-I|
Let A be 3x3 matrix such thatAA=Iand |A|=1then do like this A^2=I => A^2-I=0(A-I)(A+I)=0|A-I||A+I|=0 then |A-I|=0thanks and regardsM.MURALIKRISHNAaskIITIANS FACULTY
SeeA^2=I => A^2-I=0(A-I)(A+I)=0|A-I||A+I|=0|A-I|=0
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