Re: Plot the function error

[Abdul Rahman Riza]

Thank you Stefan,

That exactly what I wanted. 

I am wondering if octave able to plot 2 function f(x) and g(x) simultaneously where 0 < x < 26

You already solved for f(x) = 1/((206/x)+5.2+1.7*x))

Then how to put it together if g(x) = (80/x)+42+(0.5)*x

I need to draw in gnuplot the maxima and minima from f(x) and g(x) where 0 < x < 26 

thats mean df(x)/dx=0 and dg(x)/dx=0

thx in advance,
Riza


On Fri, 2010-03-26 at 22:23 +0100, Stefan Neumann wrote:
>     
>     
>     2010/3/26 Abdul Rahman Riza <address@hidden>
> >         Actually I want to plot the function 1:((206:x)+5.2+1.7*x)) from x=0 until x=26
> >     
> >         
> >     
> >         
> >         
> >     
>     
>     
>     Hi Riza,
>     
>     perhaps you meant   "1/((206/x)+5.2+1.7*x)) from x=0 until x=26"  ?
>     
>     
>     If that is the case, then try like this:
>     
>     octave:1> x=0:.1:26;
>     octave:2> plot(x,1./((206./x)+1.7*x+5.2));
>     
>     
>     Stefan
>