DSOLVE in 5.01 ??
- To: mathgroup at smc.vnet.net
- Subject: [mg47497] DSOLVE in 5.01 ??
- From: turbo cyx <turbocyx at gmx.net>
- Date: Wed, 14 Apr 2004 07:16:54 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi The following sequnece worked fine in all Mathematica versions including 4.2 dgl1 = m g - c v[t]^2 == m v'[t] dgl2 = s'[t] == -v[t] DSolve[{dgl1, dgl2, s[0] == h0,v[0] == 0}, {s[t], v[t]}, t] But since 5.0 (and now in 5.01) there are only a error messages ? Whats wrong here, why can't 5.01 solve this thing when 4.2 can??? OTOH: DSolve without the boundary conditions works fine (DSolve[{dgl1, dgl2}, {s[t], v[t]}, t]), and calculationg the Constants C[1], C[2] by "hand" (i.e. with Solve) also... Thanks for help Cyx