Question 963864
{{{A=(matrix(2,2,8,3,4,-3))}}}
{{{abs(A)=-36}}}
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{{{A[x]=(matrix(2,2,5,3,7,-3))}}}
{{{abs(A[x])=-36}}}
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{{{A[y]=(matrix(2,2,8,5,4,7))}}}
{{{abs(A[y])=36}}}
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{{{x=abs(A[x])/abs(A)=-36/(-36)=1}}}
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{{{y=abs(A[y])/abs(A)=36/(-36)=-1}}}