Re: Need Help
- To: mathgroup at smc.vnet.net
- Subject: [mg94637] Re: Need Help
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Thu, 18 Dec 2008 07:22:24 -0500 (EST)
On 12/17/08 at 6:33 AM, koyedeji at morehouse.edu (Oyedeji, Kale) wrote:
>Thannks Daniel for your advice. I changed Evaluate to RSolve but
>still got the same result. What I wanted was a calculation of S[k]
>and R[k] for every k. I wanted a random number generated for each k.
>I expect S[1]= some number, R[1]= some number for each k.
>Thanks also for calling my attention to CopyAs.Plain Text.
>'Kale
>With[{B=8,f=3x10^-5},
>sol=RSolve[{S[k+1]==R[k]*B*Table[Random[],{10000}]-f*S[k]*R[k],R[k+1
>]==f*S[k]*R[k], S[0]==3400, R[0]==9}, {S,R}, {k,0,10000}]]
It is still unclear as to what you are trying to accomplish
here. RSolve is meant to solve a recurrence relationship. That
is find a set of rules relate the n+1th member of a sequence to
some number of previous sequence values that can reproduce the
sequence. That is RSolve is trying to find rules of the form
f[n+1] == a g[n] + b h[n-1] + ...
I don't see how you can expect to find any consistent set of
rules if you substitute random integers for the arguments. So,
what is it you are trying to accomplish here?
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