Question: Nebwie plotting question : how to plot a function with some fixed values for some of its parameters

Hello everybody, I guess this is a pretty basic question but couldn't find how to do it ... So I have some functions that I would like to plot with n as a variable and putting some fix values for the other parameters. So for instance I have below functions : [IMG]http://img.photobucket.com/albums/v200/ArthurHff/maple.jpg[/IMG] And I would like to plot them on the same diagram with n ranging from 1 to 20, C=100, e=1, and h=2.8 How do I do that ? :?
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