NDSolve with Piecewise function

*To*: mathgroup at smc.vnet.net*Subject*: [mg87888] NDSolve with Piecewise function*From*: Adam Simpson <simpsoa at email.uc.edu>*Date*: Sat, 19 Apr 2008 03:36:20 -0400 (EDT)

Hi, I am wanting to use NDSolve on a piecewise function but am running into some trouble. Basically what I want to do is this: NDSolve[ {Piecewise[{{FunctionsA, -.001 < x < .001}}, FunctionsB]} , {x, y, z}, {t,10^-5}] So I have x,y,z as functions of t that I want to solve for and in a certain region of x I want to use a different set of equations. I am not really sure if I can go about it this way or not though. Any help on how to tackle such an equation would be greatly appreciated.