- 5

- 0

## Main Question or Discussion Point

For which value of does the matrix

-4 k

-3 -7

have one real eigenvalue of multiplicity 2??

I use det(µI-A)=0

and end up with µ^2 - 3µ - 28 + 3k

but i dont know where to go from here

pls help

-4 k

-3 -7

have one real eigenvalue of multiplicity 2??

I use det(µI-A)=0

and end up with µ^2 - 3µ - 28 + 3k

but i dont know where to go from here

pls help