Question 1059939
Use Cramer's rule,
{{{A=(matrix(4,4,
2,4,6,1,
0,-4,8,1,
8,-8,4,1,
6,2,8,1))}}}
{{{abs(A)=-288}}}
.
.
.
{{{A[u]=(matrix(4,4,
-14,4,6,1,
-20,-4,8,1,
-36,-8,4,1,
-26,2,8,1))}}}
{{{abs(A[u])=576}}}
.
.
.
{{{A[v]=(matrix(4,4,
2,-14,6,1,
0,-20,8,1,
8,-36,4,1,
6,-26,8,1))}}}
{{{abs(A[v])=-288}}}
.
.
.
{{{A[w]=(matrix(4,4,
2,4,14,1,
0,-4,-20,1,
8,-8,-36,1,
6,2,-26,1))}}}
{{{abs(A[w])=288}}}
.
.
.
{{{A[d]=(matrix(4,4,
2,4,6,-14,
0,-4,8,-20,
8,-8,4,-36,
6,2,8,-26))}}}
{{{abs(A[d])=2304}}}
.
.
.
So then,
{{{u=abs(A[u])/abs(A)=(-576)/(-288)=2}}}
.
.
{{{v=abs(A[v])/abs(A)=(-288)/(-288)=1}}}
.
.
{{{w=abs(A[w])/abs(A)=(288)/(-288)=-1}}}
.
.
{{{d=abs(A[d])/abs(A)=(2304)/(-288)=-8}}}