I'm trying to approximate points with a function of certain form with Statistics[NonlinearFit]. I expect the graph in the second example to be closely approximate of the points, just like the first graph. For some reason, the second graph is way off. Seems like a bug. Any suggestions are highly appreciated.

Here is the code

plotApprox := proc(listName)
    local X, Y, convModel, modList;

Hello,

To label plot axes as Greek letters, one should use the "labelfont=[SYMBOL]" parameter, but this option makes both axes in Greek letters. Is it possible to make only the horizontal axe as a Greek letter, while the vertical axe remains as an English word?

Thanks in advance.

I'm trying to use the convexhull function to plot convex hull of points. Explanation of the functions is here

http://www.maplesoft.com/support/help/Maple/view.aspx?path=simplex/convexhull

The problem is that the convex hull of the plot is always shown in yellow background. Is there a way to change the color?

Thanks.