Question

Linear algebra Question

Answer 1

post it please

Answer 2

det(A−λI)=0

Answer 3

where A= 1 -2
3 -4

Answer 4

http://www.wolframalpha.com/input/?i=%7B%7B1%2C-2%7D%2C%7B3%2C-4%7D%7D+-+l%7B%7B1%2C0%7D%2C%7B0%2C1%7D%7D

Answer 5

I have a question for you (Turning Test) its on my page

Answer 6

Eigenvalues?
\[A-\lambda I=\]
1-lambda -2
3 -4-lambda
I'm just going to put an x for lambda because it is easier
so the determinant is
(1-x)(-4-x)-(3)(-2)=-4-5x+x^2+6=x^2-5x+2
solve for x (really lambda)

Answer 7

Sorry I distributed wrong:
(1-x)(-4-x)-(3)(-2)=-4+3x+x^2+6=x^2+3x+2=0
solve for x (really lambda)

Answer 8

=(1-x)(-4-x)-(3)(-2)

Answer 9

ohhh,,, yea... i was doing it like that but it looked weird,,,