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List:       gnuplot-info
Subject:    Re: plotting polynomial curves
From:       matuda () film ! s ! dendai ! ac ! jp
Date:       2002-11-20 10:24:29
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Hi!

How about following?

  f(k,x)=a*k + b*x + c*x**2 + d*x**3 + k*x
  a=1;b=0.5;c=0.2;d=0.1;
  plot f(1,x),f(2,x),f(3,x)

>to anyone who can assist
>
>i have an equation of the type:
>
>z = ax + by + cy^2 + dy^3 + xy
>
>what i would like to do is plot the function for various values of x, ie, 
>
>if x=1
>
>then i would plot
>
>z = a + by + cy^2 + dy^3 + y (over a range for y)
>
>and if x = 2
>
>then i would plot
>
>z = 2a + by + cy^2 + dy^3 + 2y (over the same range for y)
>
>essentially i could do this long hand ie workout each equation and type in
>
>plot equation1,equation2....etc
>
>but is there a more elegant way to do it ie
>...

Good luck!

Namio MATUDA <matuda@film.s.dendai.ac.jp>
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