All Questions

216 views

How to plot points with uncertainties and dates assigned?

I want to plot a graph from list of points, but each point also has uncertainty assigned AND date. Without uncertainties DateListPlot works great, without dates ErrorListPlot works OK, but how it ...
689 views

Shortcuts for integration and differentiation?

I am trying to learn the most useful keyboard shortcuts for doing basic operations such as integration, differentiation etc in standard form. A few questions - I have checked the documentation and ...
961 views

Documentation searches hang frequently: Anyone else dealing with this?

I've been struggling with a number of hangs, dynamic timeouts, and outright crashes when using the search/documentation center in version 9. I've tried uninstalling/reinstalling and clearing ...
187 views

FontSubstitutions: how do they work?

I'm puzzled by FontSubstitutions. The help says this: FontSubstitutions is an option for Style and Cell that gives a list of substitutions to try for font ...
327 views

Adding multiple Complex Numbers in Euler form

Say I have a series of $n$ complex numbers of the form $A_k e^{(I \ \theta_k x)}$ where $A_k$ is a real number and so is $\theta_k$ and $k$ runs from $1$ to $n$. $x$ is an algebraic symbol. ...
629 views

How can I return a Sequence?

Recently I had the need to redefine a certain symbol in my init.m so it would be automatically omitted from any lists it appears in. I decided to redefine it to an empty sequence, e.g. ...
276 views

Strange behaviour of OutputResponse

I am having some trouble when using OutputResponse. For instance consider the following command ...
69 views

Factor inside argument

How do you use Factor so that it will factor expressions inside the arguments of some bigger expression. For example Factor[ Cos[t w - t z]] gives ...
49 views

MATLAB-like convolution and derivation using Mathematica [duplicate]

Possible Duplicate: Discrete Convolution I would like to be able to convolve two functions of two variables in Mathematica, and then plot derivatives (or functions of derivatives) of the ...
407 views

Exporting Mathematica expression as SVG

I was thinking it would be nice if I could export Mathematica expressions as svg, but I am having some issues. At first blush everything seems to work fine. This piece of code does produce a svg file: ...
740 views

Using DSolve to solve for x[t,parameter]

I'm trying to solve an ODE with two independent variables (a cannon firing from a cliff incorporating wind resistance dependent on velocity). I've tried the following for the x-component: ...
830 views

How do I find the Euclidean distance between one point and all the points in a list?

I want to find the Euclidean distance between one point (x1) and a list of points (y1), which contains a lot of coordinates x1 = killer[[2]] {6.05102, ...
241 views

Initialization Time Out (Weighted Financial Data)

I've been playing with WeightedData and wanted a financial engineering example, a colleague suggested working with the fractional return (...
515 views

intersection between two curves in Mathematica

I have two curves (drawn from points) in a plane, one is drawn with ListLinePlot and the other drawn with ParametricPlot. How ...
804 views

Elegant way to handle columns operations

Inspired by this question from @sjdh and by my recurrent use of columns operations in database sets, I was looking for one way to make columns operations more symetric, so I can handle with matrix and ...
379 views

Integrating over Bessel Function erroreous? (Hankel Transform)

The Hankel Transform is given by Integrate[f[x] x BesselJ[0,x t],{x,0,Infinity}] It is self-inverse, so ...
873 views

133 views

Different actions with dragging and clicking points in same graphic

On a graphic (in this example a simple plot), I need two points to move when I drag with the mouse, and these points must move to location {1,1} when I click on them. This is how I got it to work, ...
305 views

Where is the “Insert > Citation> Bibliographical Reference” Command?

I don't have the command for inserting citations described in the documentation: "Insert > Citation> Bibliographical Reference" is not present in my menus: That's the entire contents of my ...
47 views

Inverting a matrix [duplicate]

Possible Duplicate: Why does MatrixForm affect calculations? I am facing a strange behaviour from Mathematica when asking it to invert the following matrix: ...