Re: [Gnuplot-info] Gnuplot doesn't show me the right x-axis intersection of a function

[Dr. I. D. J. <die...@t-...>]

Hi Luigi,
I am sure you did something wrong. First of all, your formula is erratic as it 
should be

f(x)=-0.9+9.638*x**(-1.394)

please note the "*" between the factor (9.638) and the power of x ...

secondly the command plot y= something does not work, what you ought to do is 
either 

plot -0.9+9.638*x**(-1.394) w l lw 2

or say

f(x)=-0.9+9.638*x**(-1.394)
plot f(x) w l lw 2

to provide an example. In both cases I get the zero crossing around x=5.479

Hope this helps,
take care




Dieter Jurzitza

On Samstag, 18. August 2012 23:06:27 Luigi wrote:
> Hi. I was trying to plot the following function:
> 
> -0.9+9.638x^(-1.394)
> 
> by using the command
> 
> plot y=-0.9+9.638x**(-1.394)
> 
> The problem is that the intersection with the x-axis (y=0) should be at
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