Typo in Project 3

Hi all,

There's been a small typo in Equation (17) in Problem 3: we were missing two constant phases, which lead to some confusion about the signs of A_+ and A_-, and consequently the absolute values in Problem 5. (In short: you can assume that both A_+ and A_- are positive.)

See the notes under Problem 3 and Problem 5 on project page.

Given this late correction, when grading your reports we will not subtract points for confusion about the signs of A_+ and A_- that is due to this typo.

Sorry for the confusion and good luck finishing your reports!