Student Support Forum: 'Why does solve output an empty list?' topicStudent Support Forum > General > "Why does solve output an empty list?"

 Next Comment > Help | Reply To Topic
 Author Comment/Response LeoDo 06/23/13 11:09am Hi! I am trying to find the crossing point between to point particles on linear paths: Here's what I enter: particle1 = {x0 + vx*t, y0 + vy*t} particle2 = {X0 + VX*t, Y0 + VY*t} toSolve = Solve[particle1 == particle2, t] Already here, Mathematica informs me that there will never be a solution: Out[]={} No more luck entering specific values: toSolve /. {x0 -> 0, vx -> 1, y0 -> 0, vy -> 0, X0 -> 5, VX -> -1, Y0 -> 0, VY -> 0} Out[]={} Here, the two particles should meet after 2.5 seconds at midpoint on the x axis. Particle One launches from the origin in x-Direction at speed 1, particle Two starts off at point (5,0) and travels at speed -1 in the x direction. What am I doing wrong? URL: ,

 Subject (listing for 'Why does solve output an empty list?') Author Date Posted Why does solve output an empty list? LeoDo 06/23/13 11:09am Re: Why does solve output an empty list? jf 06/23/13 12:34pm
 Next Comment > Help | Reply To Topic