Question

Se A=(aij)2x2 tal que aij=i+j,calcule det A e det At

Answer 1

A{a11 a12}
{a21 a22}
aij= i+j
a11=1+1 =2
a12=1+2=3
a21=2+1=3
a22=2+2=4

A={2 3}
{3 4}