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Problem with DSolve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96410] Problem with DSolve
  • From: Tony <aezajac at optonline.net>
  • Date: Fri, 13 Feb 2009 03:41:33 -0500 (EST)

can anyone help what is wrong?
On version 7 I enter

   DSolve[{y'[x]==.02*y[x]-y[x]^2,y[0]==a},y[x],x]

and get

       During evaluation of In[58]:= Solve::ifun: Inverse functions are being used by Solve, so some solutions may not be  found; use Reduce for complete solution information. >>
       During evaluation of In[58]:= Solve::ifun: Inverse functions are being used by Solve, so some solutions may not be found; use Reduce for complete solution information. >>
       During evaluation of In[58]:= DSolve::bvnul: For some branches of the general solution, the given boundary conditions lead to an empty solution. >>


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