Download 4125_Testdata.txt
View file detailsI am trying to create a point plot from a data file, with the first two columns, x,y, and the third column as the error in y.

I can make the pointplot with the first two columns, but trying to add in the third colum for the Errorplot in statistics program is not working.  Is there a way I can use this third column of my data file to be the yerrors= part of Errorplot command?

I am having a difficult time understanding the solution that Maple 10 returns for the DE that I am telling it to solve.

 Could you explain this solution and help me to know what to do with it.

  Download 4125_Mapleprimesexample.mws
View file details

Regards,

Jacob

I can easily adjust the field strength in a fieldplot, with(plots):fieldplot([x/(x^2+y^2)^(3/2),y/(x^2+y^2)^(3/2)], > x=-1..1,y=-1..1,fieldstrength=log); but the same command does not work in a dfieldplot. with(DEtools):dfieldplot(diff(y(x),x)=1/2*(-x-(x^2+4*y(x))^(1/2)), y(x), x=-3..3, > y=-3..2, title=`Restricted domain`,color=1/2*(-x-(x^2+4*y)), fieldstrength=log); How can I adjust the field strength in my dfieldplot? For simplicity, I took these examples out of the help pages in Maple10.

I am trying to integrate this equation numerically, but Maple just returns it every time. Any suggestions on how to tackle this kind of problem? I want to treat mu and T as const. I made the worksheet a public file on my account called Numerical Integration. PLease give it a try if you have the time and let me know what you come up with. You can also make your own worksheet, the integral is as follows. int(sqrt(x)/(exp((x-mu)/T)+1), x = 0 .. infinity) Thanks, Good Luck