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MathGroup Archive 2007

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Re: Solving periodic functions

  • To: mathgroup at
  • Subject: [mg74999] Re: Solving periodic functions
  • From: Bill Rowe <readnewsciv at>
  • Date: Fri, 13 Apr 2007 02:16:47 -0400 (EDT)

On 4/12/07 at 4:46 AM, w3bdevilREMOVE at (David Rees)

>Anyway, in Mathematica, how do I solve an equation with multiple
>periodic functions within a given function domain bound?

>i.e. How would I find all values of x given 6Cos[x]-5Cos[x] = 0
>where 0<x<=2Pi ?

A very convenient way to accomplish this is with the RootSearch
package Ted Ersek wrote that can be found at


=46or example after loading the package

RootSearch[6*Cos[x] - 5*Sin[x] == 0, {x, 0, 2*Pi}]

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