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how to define a function v on an interval in sympy ?? and how to plot x(v) versus y

hi, in Matlab i can define a function on a interval(use chebfun)
the code like this :

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  1. v=chebfun('c',[3,5])
  2.  x=sin(v)+cos(v)
  3.  y=sin(v)-cos(v)
  4.  plot(x,y)
then got a figure of x versus y when v is in interval [3,5].

how to do this in sympy??
Dec 9 '12 #1
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