Hi
Im confused on where to start in proving this question
Let A = where a, b, c and d are real numbers. Show that the characteristic equation of A is
where tr(A) = trace of A.
Thanks
[quote=chuckienz;312692]Hi
Im confused on where to start in proving this question
Let A = where a, b, c and d are real numbers. Show that the characteristic equation of A is
where tr(A) = trace of A.
Well lets start with what we know...
to compute the char poly we evaluate the determinate of
Expanding we get
Now just sub we what we know from above and we are done