Re: Modulus Question
- To: mathgroup at smc.vnet.net
- Subject: [mg16520] Re: [mg16396] Modulus Question
- From: Jurgen Tischer <jtischer at col2.telecom.com.co>
- Date: Tue, 16 Mar 1999 04:00:00 -0500
- Organization: Universidad del Valle
- References: <199903110716.CAA12372@smc.vnet.net.>
- Sender: owner-wri-mathgroup at wolfram.com
Guy,
x[t_]=Mod[x[t],2\[Pi]]/.First[soln]
Jurgen
Guy Gilliland wrote:
>
> I am trying to take the modulus of a function and am having difficulty.
> The following is my code:
>
> soln=NDSolve[{x'[t]==y[t],x[0]==0.4,
> y'[t]==-gamma1 * y[t] - Sin[x[t]] + A1 * Cos[z[t]],
> y[0]==1.2,z'[t]==w,
> z[0]==0},{x,y,z},{t,0,1500},MaxSteps\[Rule]50000]
>
> Before I do a parametric plot, I want to do the following:
>
> x[t] = x[t] Mod 2*pi (* limit x to belong to interval from 0 to 2*pi
>
> I don't know how to do this. Using the Mod function gives recursion
> errors (i.e., Mod[x[t],2*pi] doesnt' work).
>
> Thanks in advance for your assistance. Please email me at
> guy20 at wharton.upenn.edu
>
> Guy Gilliland
- References:
- Modulus Question
- From: Guy Gilliland <guy20@wharton.upenn.edu>
- Modulus Question