```Date: Feb 18, 2013 9:50 PM
Author: Derek Goring
Subject: Re: help with writing a short program using square waves, fourier<br> series expansion

On Tuesday, February 19, 2013 2:37:06 PM UTC+13, laura  wrote:> A square wave of period 2L is a step function which is equal to 1 for x from 0 to L, then is equal to -1 for x from L to 2L.> > > > A square wave can be approximated by this Fourier Series expansion:> >                 infinity> >  f(x )=(4/pi) ?((1/n)sin(npix/L))> >                 n=1,2,3,5....> > I need to write a program that prompts the user for a maximum value for n and a value for L. Using those values, I have to compute the Fourier Series expansion for a square wave and plot the result.> > L must be a positive number, and n must be a positive odd integer. If the user does not provide an acceptable number, you should detect the error, display an error message, and stop your script.> > You should evaluate the function for 500 values of x, evenly distributed from 0 to 2L.> > > > I know this is alot but I have no idea how to even start it! If you can at least start me off that would be great!> > I know i need to get an input, detect an error, stop the script, and evenly distrubute 500 points im just not sure how. thanks again!Here's what you need to get you started:help inputNow, you write some code and when you get stuck come back here and ask for help.But don't expect us to do your homework for you.
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