# User Portlet

David J M Park Jr
Discussions
a^4 - 4 a^3 z + 6 a^2 z^2 - 4 a z^3 + z^4 % /. a -> y + z // Simplify
The Presentations Mathematica application, which I've developed over the years, has several features that address these issues. One is: HiddenNotebookData[datasymbol, dataname, datavalues] will store the datavalues in a skeleton structure...
I don't understand your question. What do you mean by gain? The only fault I find with the ContourPlot is that the 1.0 contour is a little ragged at the left hand end. Try ContourPlot[x (z - 1) + (1 - x), {x, 0, 1}, {z, 1, 2.5}, ...
Try out the CellMargins option. Are you making a stylesheet or adding the change in a notebook for each Subsection?
I'm not certain of this because I haven't done much of the Geo graphics - if that is what you're using. But if you're using the GridLines option in your graphics then you can also add the additional option: Method -> {"GridLinesInFront" ->...
It is NOT a demonstration of a non-cell mistakenly called a cell. It is a Mathematica cell. It has a cell bracket. It has cell properties. What is a non-cell? Are you being ironic? This is all nothing but a confusing diversion from doing math. I...
By the way, I notice that your example is a decibel conversion. If you want to send me your email address I will send you a Dropbox link to an application I developed called UnitsHelper. It has a generalized decibel conversion facility as well as...
Yes, Ted Ersek's RootSearch package is GREAT if you're looking for all possible roots along a line (whether they cross the line or not) - a common application that I don't think that WRI addresses. I have a 2010 version and tried out all the sample...
Literate Mathematical notebooks with Sectional organization and textual discussion exchanged between Mathematica users are the best technical medium of communication there is - by several orders of magnitude - easily. This is because of their active...
Make it into a Mathematica Application, which in this case would include your package, an init.m file and any notebook you wanted to send to your reader. Put it all in your UserBaseDirectory/Applications folder. (It should have a dollar sign but I...