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Re: How can I reduce the frequency of a sine wave tia

  • To: mathgroup at smc.vnet.net
  • Subject: [mg104749] Re: [mg104714] How can I reduce the frequency of a sine wave tia
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Sun, 8 Nov 2009 06:50:03 -0500 (EST)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200911071151.GAA10194@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

Do you want to superpose another frequency to get a single signal, or 
just plot another frequency along with the one you started with?

Compare these:

   Plot[Sin[10x]+Cos[3x],{x,0,2Pi}]
   Plot[{Sin[10x],Sin[3x]},{x,0,2Pi}]

Rick T wrote:
> Greetings All
> 
> I have the example below which produces 10 cycles
> a = Sin[10 x]
> Plot[a, {x, 0, 2 Pi}]
> 
> What Type of signal would I need to add/multiple/divide to reduce it's
> signal/frequency to 5 cycles?  I know I can just change the number 10
> to 5
> but I need to combine it with another signal.  what mathematical
> operation/signal do I need to use.
> 
> tia sal2
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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