Interesting. I used linear algebra with quantum mechanics where eigenvectors represent quantum state of the Hamiltonian which is how I initially understood them.<p>And as for TAing, have you ever TA&#x27;d? You definitely get a feeling but I can count numerous times when I&#x27;ve stood in front of the tutorial class and asked if there are any questions only to get no response back. I think it&#x27;s a symptom of first years. I&#x27;ve TA&#x27;d calculus as well and I get similar responses. It&#x27;s very frustrating sometimes.