Re: DSolve change in v5 -- undocumented error message

*To*: mathgroup at smc.vnet.net*Subject*: [mg46768] Re: DSolve change in v5 -- undocumented error message*From*: Tom Burton <tburton at brahea.com>*Date*: Sun, 7 Mar 2004 01:33:46 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hello, Version 5.0.0.0 on Max OSX gives me Solve::ifun: Inverse functions are being used by Solve , so some solutions may not be found; use Reduce for complete solution information. More\[Ellipsis] Out[2]= r t E k n0 {{n[t] -> ----------------}} r t k - n0 + E n0 I verified the solution. Tom Burton On 3/4/04 9:05 PM, in article c298r9$56c$1 at smc.vnet.net, "Gareth Russell" <gjr2008 at columbia.edu> wrote: The following expression used to work in v4: DSolve[{n'[t] == r*n[t]*(1 - n[t]/k), n[0] == n0}, n[t], t] In v5, I get the message "DSolve::bvfail: For some branches of the general solution, unable to solve the conditions." ...