0
votes
0answers
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 ...
10
votes
5answers
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: ...
1
vote
2answers
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 ...
2
votes
1answer
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 ...
8
votes
2answers
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 ...
0
votes
0answers
55 views
5
votes
2answers
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. ...
0
votes
1answer
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 ...
3
votes
3answers
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 ...
3
votes
2answers
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 ...
0
votes
1answer
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 ...
10
votes
1answer
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. ...
3
votes
2answers
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 ...
1
vote
1answer
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. ...
0
votes
1answer
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 ...
9
votes
2answers
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: ...
4
votes
2answers
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 (...
3
votes
2answers
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 ...
1
vote
0answers
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 : ...
2
votes
1answer
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 ...
4
votes
1answer
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 ...
1
vote
1answer
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 ...
2
votes
1answer
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 ...
7
votes
1answer
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. ...
6
votes
2answers
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 ...
2
votes
1answer
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): ...
4
votes
3answers
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 ...
8
votes
2answers
193 views

Bad performance from SubsetQ?

Can I say this is a bad performance from the new V10 function SubsetQ? Here are some tests comparing it to ...
1
vote
1answer
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, ...
1
vote
0answers
102 views

Asymptotics: replacing all arguments in a trig function with dummy variable after manipulation

I'm doing manipulations on functions of the form $$\phi(x,z,t) = \sum_n a_n(\epsilon x,\epsilon t,z)e^{in( k_ox -\omega_o t + \epsilon \theta(\epsilon x,\epsilon t)))} e^{(k_o+\epsilon k(\epsilon ...
6
votes
2answers
562 views

Find a right angled triangle

If I am given 10 points in the coordinate system in the for (x,y); where x is the x-coordinate and ...
0
votes
1answer
139 views

PolarPlot works, ParametricPlot doesn't [closed]

Am new to Mathematica, so if this question has been asked already, apologies. Have a (polar) spline function and Mathematica did a fine job of calculating from my inputs and giving me the piecewise ...
0
votes
1answer
121 views

Attempt to solve for Differential Equation - Acc, Vel, Pos in (x,y,z) [closed]

In the problem I'm working on, there is a tennis ball that is subjected to a headwind, tailwind, and crosswind. I am trying to use NDSolve in order solve for the position functions and to eventually ...
0
votes
2answers
116 views

Variable Value as Range

Thank you for the help so far! I would like to assign +/i signs for the function and solution such as (+)(+)(-) and therefore (-). It is working for the first evaluation, λlower, but not for the ...
0
votes
1answer
107 views

Confused by behavior of ListLogPlot in Mathematica 10

I have a notebook I originally created in Mathematica 8, where the following (simplified) code worked fine. ...
13
votes
1answer
449 views

Morphological Filtering in 3D to produce skeletons

Context As a follow up of this question and that answer, I would like to identify the special lines separating 3D watersheds. These are useful in the context of astronomy to identify the ...
4
votes
1answer
111 views

Unexpected Behaviour at Plotting Floor with Plot [duplicate]

I wanted to plot a function involving Floor, here is my code: epsilon = 0.1; f[t_] = Floor[t/epsilon]; Plot[{f[t]}, {t, 0, 5}] ...
0
votes
1answer
109 views

NIntegrate:eincr error

I am trying to solve this expression in Mathematica with the function NIntegrate: ...
9
votes
3answers
769 views

How to show matrix multiplication step by step?

Given a matrix, A: A = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; How can I do the matrix multiplication A times A step by step?
4
votes
1answer
126 views

How can I find the greatest of this expression?

I want to find the greatest of the expression $$P=a \sqrt{12-b}+\sqrt{b\left(12+a^2\right)}+66\sqrt{a^2+b+3}-\left(a^2+b\right)^2$$ with $a >0$, $0<b\leq 12$. I tried ...
0
votes
1answer
84 views

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 ...
5
votes
3answers
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 ...
6
votes
3answers
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 ...
1
vote
1answer
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 ...
5
votes
1answer
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 ...
1
vote
1answer
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. ...
12
votes
4answers
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 ...
10
votes
2answers
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.
2
votes
1answer
131 views

How to correctly map values onto an arrayplot

I want to understand why the order of the text is reversed from what it should be? If I compare the first and second results, I see that the {1,1}, {2,2},... diagonal is going down the wrong diagonal. ...
0
votes
1answer
79 views

Text input style with math expression inside

I would like to make a text input with a math expression(yellow background) within the text input. Like this: But unfortunately I don't remember what it's called. Thanks!

15 30 50 per page