# All Questions

59 views

### Where to find Mathematica 10.0.1 Updates and Bug Fixes for Student Edition? [duplicate]

Over the last week I've been dealing with some extremely frustrating bugs--bad enough that it's interfering with my ability to complete assignments for an already difficult enough class. I won't go ...
593 views

### Postfix Double Slash Notation with Multiple Parameters [duplicate]

Examples A convenient shorthand that I use frequently is the "double slash" notation to string commands together. For example, I can write: ...
100 views

### How to plot the movement of points as I change the slider

I have this code that generates an Edgeworth both with two optimum points. The optimal points change as I move the slider. I would like to plot/trace the change in the optimal so that at the end I can ...
153 views

### How to simplify an expression using a differential equation as an assumption?

I have a fluid dynamics flow described by a 3D velocity field such as u = {ux[x, y, z], uy[x, y, z], uz[x, y, z]} I want to calculate ...
194 views

### Is there a way to revert to the built-in function after overwritting it using Unprotect

When using Unprotect, we can overwrite a functions definition: Unprotect[Sqrt] Sqrt[x_]="blahblah" Protect[Sqrt] Once this is done, can we revert to the built-in ...
55 views

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129 views

### Display All Output Numbers in HEX

How might I modify Mathematica such that I can get the following functionality when working with HEX values. The odd lines are input and the even output. Red values should be the HEX values. ...
247 views

### Order contour points in clockwise

I want to describe shape of an object using contour points descriptor. Given a silhouette (image black white of an object), I extrait the contour points using EdgeDetect[] fonction. After that, I need ...
321 views

### Coloring random points in an annulus

I have found the following random generator to generate points in an annulus in stackoverflow on stackoverflow ...
135 views

### How to add and export custom metainformation with image

v.10 In the documentation, it shows you can add custom metainformation to an image under Metainformation. However, I would like to export the image with the custom metainformation and be able to ...
89 views

### Flatness of a Plot [closed]

How can I see that plot of f[x_] = x^10 - 10*x + 9 on {-4,4} has flatness in x = 0 with good ...
323 views

### Is it possible to implement symbolic sub matrices?

The accepted answer in the question Symbolic matrices in Mathematica with unknown dimensions provides a functionality to create symbolic matrices which behave pretty much as the name suggests. ...
120 views

### Partition a list dependent on consecutive list values

I have a list of 2D points which I partition every time the distance between consecutive list elements is bigger than a certain threshold. In a second step I select all the lists that start within a ...
164 views

### Finding the Tangent to the Curve [duplicate]

I could use some help with this. This is my first time using mathematica and im trying to get use to the coding. Find an equation of the tangent to the curve and graph the curve and tangents. ...
57 views

### A problem with getting a coefficient

I try Coefficient[E^(I a (t - b)), E^(I a t)] and expect the output E^(-I a b) but in fact I get ...
222 views

### Self-loops in Graph may not display correctly or export correctly to PDF (due to BezierCurve problem)

Bug introduced in 10.0 and persisting through 10.2.0 Problem is due to a BezierCurve bug. I don't understand why the following does not work: ...
182 views

### unevenly spaced data

Suppose I have a (very large) noisy data set of points $(x_i, y_i)$ and I want to smooth it. Mathematica seems to have a number of smoothing schemes (...
251 views

### Increase precision for a entire notebook

I am quite a newbie and it is taking me so much time to understand what I need to do to achieve something really simple and I still haven't found it. I run a dynamic model of a metabolic pathway in ...
133 views

### Format Mathematica complex number for fortran code use [closed]

I'm using Mathematica 10. I am trying to write into a file complex number output to then be read by a Fortran code. But when I do : ...
130 views

### Estimating Parameters of a Custom Distribution

The problem is I can not get estimation of parameters of any custom probability distribution (distributions are not built in Mathematica), here is an example: First: I entered random numbers of ...
141 views

### Vertex Labelling and Word wrap

I am having trouble formatting vertex labels, explicitly adding line breaks to Vertex labels for word wrapping and other purposes. I have explored the pane option suggested here but when I include ...
75 views

### How to set products of small variables to zero

Say I have an expression which contains different product combination of very small variables, say, δA, δB, δC. I want to set all the products and all the ...
50 views

### A question about expanding complex functions of real arguments

I have the following problem. There is such an expression as: P[x_,y_] := z[y] E^(I beta x) + Conjugate[z[y] E^(I beta x)]; The variables ...
318 views

### Creating time-lapse movies with Mathematica

Well, my question is this: Is that possible to make time-lapse movies with Mathematica? Here is some more explanation: Watch this YouTube video that is a wonderful example of time-lapse movies. ...
240 views

### Manage a network of Arduinos using Mathematica and xbee

I'm trying to take 5 analog reads from two or more Arduinos at different times. So to do that my listening port via xbee is COM8, then I start a ...
66 views

### Customized directory import

I have defined a function in a package to import some data files under a directory which is produced by a scanning device (LS55): ...
611 views

### Computing Gaussian curvature

Can Gaussian curvature $K$ be computed from WolframAlpha or any other available Mathematica program? Please indicate the program or its reference. If input ...
193 views

Can I say this is a bad performance from the new V10 function SubsetQ? Here are some tests comparing it to ...
225 views

### Explanation for coloring of variables by code editor?

I was working on some homework just now, and I realized that some of my variables have different colors, and I am not sure why. In the example below f is black, ...
102 views

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### Formulating a second boundary condition to get an alternative solution to a ODE [closed]

I have the ODE $c'(t) = t^2c^3$ with the initial condition $c(1) = 20$. The differential equation $c'(t) = t^2c^3$ (without boundary conditions) has two branch solutions. I want to formulate a new ...
168 views

### Assuming reals of unknown variables in a Matrix valued function

I am trying to write a generic matrix valued function in a package, of the form: f[matrix_] := Module[...] My problem is that I want to accept any matrix, but ...
297 views

### List Manipulation on Array with subscript elements

I am trying to write a function which operates on an array with subscripted elements. As an example i have the array a={$1_3$,$2_2$,$4_1$}, which means i have 3 amounts of value 1, 2 amounts of value ...
102 views

### ParametricPlot: Can't use Ticks

So, basically I'm trying to plot the phase portrait of a 2x2 diff system, but the parameters are a pain. I'm trying to get a good picture of the orbits, but even if ...
353 views

### Very serious multiplication bug when subscripts are used

I have found a serious bug in Mathematica 10.0.1.0 on mac os x. See the attached screenshot. It is applying the square root to the Mpc. I am very shocked by this. Does anyone know how to avoid this ...
167 views

### Trying to get multiple curves on single Bode plot [closed]

OK, we have this thing where we are supposed to compare three Bode plots. All we have to do is plug in different resistance values on the RLC circuit and and talk about why the shapes are different. ...
581 views

### Using an Image as the Fill/Texture (not background) of a Plot (not polygon)

Is it possible to use an image, rather than a color, or ColorFunction, as the filling for a plot? For instance, I want to make a plot using ...
486 views

### What is the difference between FindFit and NonlinearModelFit

I cannot get the difference between these two fitting functions in Mathematica. I even read in MMA that the result of these two are the same.