Originally Posted by

**KennyYang** Thanks for the help TK! For #1 I tried graphing and tracing the points, and ended up with pi/6, pi/4, pi/3, pi/2, 12pi/5, 12pi/7, 3pi/2, 4pi/3, and 6pi/5. I'm pretty sure these are correct.

I'm still working on #2 as how to solve for x.

#3 was not hard once I realized I could use the quadratic formula, and ended up with x=-1 and x=1/2.

For #4 I ended up with the particles colliding at points (1,-1) and (4,2).

If anything looks wrong feel free to let me know. Thanks again for the assistance.