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