Re: [ROOT] drawing a TF1*TF1/TF1

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Oct 03 2003 - 10:06:20 MEST


Hi Mariusz,

Example:

root [0] TF1 f1("f1","sin(x)",-1,1)
root [1] TF1 f2("f2","cos(x)",-1,1)
root [2] TF1 f3("f3","cos(0.9*x)",-1,1)
root [3] TF1 f4("f4","f1*f2/f3",-1,1)
root [4] f4.Draw()

see also tutorial FittingDemo.C

Rene Brun


Mariusz Sapinski wrote:
> 
>  Hello rooters,
> 
>  I got three different TF1 functions, defined like:
> 
> TF1 *f1=new TF1("f1","funcf1",xdown,xup,3)
> TF1 *f2=new TF1("f2","funcf2",xdown,xup,6)
> TF1 *f3=new TF1("f3","funcf3",xdown,xup,3)
> 
>  I'd like to plot: f1*f2/f3
> 
>  Is there a fast way to do it?
> 
>  Regards,
> 
> --
> Mariusz



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