Verify that the eigenvector v3=(4,-2,1) corresponding to the eigenvalue e2=16 is orthogonal to the eigenvectors v1=(1/2,1,0) and v2=(-1/4,0,1) (both) corresponding to eigenvalue e1=-5
All I can think to do is to just do the dot product of v1 . v3 and v2 . v3 and if the dot product =0 then v3 is orthogonal to them?