# User Portlet

David Reiss
Discussions
Strange. Is this showing up both in Mathematica and the CDFPlayer?
Perhaps the cloud server version is exhibiting this issue because it is a Linux machine with a virtual "monitor" that has an effective dot pitch that is not up to par with the "retina" pitch of a MacBook...
You have to provide arguments for the vector v and it also has to be in the form of a list of 3 components: as in: Grad[Div[{v1[x1, x2, x3], v2[x1, x2, x3], v3[x1, x2, x3]}, {x1, x2, x3}], {x1, x2, x3}] which gives \$...
This depends on what you mean by "better". What do you want to achieve? A first comment: there's no reason to use Show in your code--just put *everything* in a Graphics: Graphics[{Thick, Green, Rectangle[{1, 0}, {4, 2}],...
Your syntax is not quit right. Define the function like this: f[x_] := 3 x - 2 then f[5] yields 13 Take a look at the references in this link so you can start to learn Mathematica ...
Just counting out loud on OSX, for all three browsers (Safari, Chrome, and Firefox), it takes 8 seconds for the page to load and show. In contrast, http://mathematica.stackexchange.com is almost instantaneous.
[http://reference.wolfram.com/language/ref/Part.html][1] [1]: http://reference.wolfram.com/language/ref/Part.html
At the most basic level, to create a notebook navigator as Eric Schulzes did in his Calculus textbook work is to create a dockedCell with an ActionMenu where the menu items execute a function like (assuming that all of the notebooks are in the same...
If you type the query like this 1/(x+13328)^(5/7)+1/x^(5/7)-2/101325^(5/7) =0 then WolframAlpha shows you the equation as well as a plot. The plot shoes (by a red dot) where the curve crosses the x-axis. Then putting your mouse over the...
I think you would really benefit by learning the Wolfram Language (i.e. Mathematica) as it's intended to be used and how it is most powerful. Though one can write old school procedural programs in Mathematica using GOTO, RETURN & c, it is almost...