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Re: Is this so hard?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95255] Re: [mg95227] Is this so hard?
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Mon, 12 Jan 2009 06:26:33 -0500 (EST)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200901111138.GAA12346@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

You didn't want another initial (or boundary) condition for this 2nd 
order ODE?

cool-RR wrote:
> Hey all,
> 
> I gave DSolve this thing:
> 
> DSolve[{x''[t] == 1/x[t]^2, x[0] == -1}, x, t]
> 
> It made it think and think until it crashed.
> Is this DE so hard? I figured it was something basic.
> 
> Thanks,
> Ram.
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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