Re: Re: why the inputs are not ODEs in NDSolve function

*To*: mathgroup at smc.vnet.net*Subject*: [mg102698] Re: [mg102679] Re: why the inputs are not ODEs in NDSolve function*From*: Haibo Min <yshdfeng at gmail.com>*Date*: Wed, 19 Aug 2009 07:03:06 -0400 (EDT)*References*: <h6b4i1$rmk$1@smc.vnet.net> <200908181010.GAA17873@smc.vnet.net>

Thank you so much, Daniel! Due to my carelessness, the Simgnoi function and the initial statement are wrongly defined. I have corrected those errors, and it works OK. Best regards, Haibo On Tue, Aug 18, 2009 at 6:10 PM, dr DanW <dmaxwarren at gmail.com> wrote: > Typos, dude, typos. > > First off, e is not the same as E, so: > > Simgmoi[x_?(Length@# == 5 &)] := {1/(1 + e^-x[[1]]), 1/( > 1 + e^-x[[2]]), 1/(1 + e^-x[[3]]), 1/(1 + e^-x[[4]]), 1/( > 1 + e^-x[[5]])}; > > Should be: > > Simgmoi[x_?(Length@# == 5 &)] := {1/(1 + E^-x[[1]]), 1/( > 1 + E^-x[[2]]), 1/(1 + E^-x[[3]]), 1/(1 + E^-x[[4]]), 1/( > 1 + E^-x[[5]])}; > > Also, in your initialization statement: > > init = {W == ( { > {0.2, 0.3, 0.1}, > {0.5, 0.7, 0.3}, > {0.5, 0.2, 0.1}, > {0.3, 0.2, 0.6}, > {0.7, 0.5, 0.1} > } ), e[0] == {0.2, 0.3, 0.4}, r[0] == {0.1, 0.4, 0.5}}; > > Should be > > init = {W[0] == ( { ... > > This should get you going again. I think AccuracyGoal->Infinity is > inadvisable, you might want to scale back on your expectations. > > Daniel > >

**References**:**Re: why the inputs are not ODEs in NDSolve function***From:*dr DanW <dmaxwarren@gmail.com>