From: Luigi <driver.8@li...>  20120818 21:06:35

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 xaxis (y=0) should be at around x=5.47, but the function's plot just approaches y=0 as an asymptote. When I try to plot it with Maxima, the intersection is correct. Is there something wrong in the syntax of the command? Thanks. 
From: Dr. Ing. Dieter Jurzitza <dieter.jurzitza@t...>  20120818 21:47:54

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 xaxis (y=0) should be at **************    \ /\_/\   ~x~ /\ / \ / \_/ ^^__ _ / _ ____ / <°°__ \ \_/  /     _ _ _ _ if you really want to see the pictures above  use some font with constant spacing like courier! :)  
From: Jefferson Stafusa E. Portela <stafusa@gm...>  20120818 22:02:29

Hi Luigi, to what Dieter Jurzitza already said I only add that you'll see better your intersection with the xaxis if you adjust the range of the plot, for example: set xrange [0:10] set xrange [0:10] plot 0.9+9.638*x**(1.394) w l lw 2 With the default ranges all you'll see is indeed that divergence of your function as x>0. Cheers, Jefferson On Sat, Aug 18, 2012 at 11:06 PM, Luigi <driver.8@...> 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 xaxis (y=0) should be at > around x=5.47, but the function's plot just approaches y=0 as an asymptote. > > When I try to plot it with Maxima, the intersection is correct. > > Is there something wrong in the syntax of the command? Thanks. > >  > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > gnuplotinfo mailing list > gnuplotinfo@... > https://lists.sourceforge.net/lists/listinfo/gnuplotinfo 