ok so we got the T*=T part

now in order o find the eigenvalues

so k=2 and k=1 are eigen values and they are positive

but i am not sure if i have done it correctly

because by definition k is an eigen value if T(v)=kv

or if k nullifies the caracteristic polinomial

i cant show neither of those here

i just said intuitivly that 1 ,2 are eigenvalues

??

i can replace T=Av

but it doesnt go anywhere