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WorkingPrecision and NDSolve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg104036] WorkingPrecision and NDSolve
  • From: Andre Hautot <ahautot at ulg.ac.be>
  • Date: Fri, 16 Oct 2009 07:05:08 -0400 (EDT)

Why does this instruction properly work if precision =60 but not if 
precision=70  (Message : error test failure at t=0.01316... ) :


NDSolve[{x''[t] + x'[t] + Sin[x[t]] == Sin[t/3], x[0] == 0, x'[0] == 0}, 
x, {t, 0, 10}, WorkingPrecision -> 70]         ?

Thanks in advance,
A. Hautot



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