Hello,

Was wondering if anyone could help, i am trying to work out eigenvectors after working out the 3 eigenvalues for the below matrix:

[5 3 2

1 4 6

9 7 3]

My eigenvectors are correct however for 2 of the eigenvalues, my eigenvectors have opposite signs.

I have checked these in MathCAD so i know that the eigenvectors are correct however for some reason some of the signs are opposite.

I have attached my workings for the eigenvalue 1.65, the eigenvectors shown have opposite signs, can anyone spot why.

Thanks so much for your help.

Attachment 22720Attachment 22719