Recent content by linie18

I'm stuck on this same problem. I solved to: 2A,\sin(((k_1+k_2)*x-(\omega_1+\omega_2)*t)/2),\cos(((k_1-k_2)*x-(\omega_1-\omega_2)*t)/2) but it's saying "There is an error in your submission. Make sure you have formatted it properly." Can someone help point out the error?

Homework Statement Which of following sets of conditions (A - F), if true, would show that the expressions 1 and 2 above define the same vector C_vec as expressions 3 and 4? 1. The two pairs of expressions give the same length and direction for C_vec. 2. The two pairs of...