# All Questions

68 views

### How to created visualization dashboard for summary data?

I would like to create the following dashboard: The numbers indicate my desired dimensions for the cells. I would like the cells to contain a regional plot, a trend line, and bar charts. I have ...
55 views

### How to do literal replacement to format expression?

I can do a replacement of an expression with some variables to alternate symbols: ...
292 views

### Create a Pascal Matrix

I am trying to write a function that can create a Pascal matrix. So far I have ...
25 views

### How to get a Basis set BS from a polynomial set PS in Wu's Method [on hold]

Here are three polynomials , I want to get a basis BS from them in Wu's Method ,moreover ,for more polynomials ,how can I get it? ...
28 views

### Re-ordering a nested list according to second element [on hold]

I am dealing with very large lists, but to illustrate my problem consider the following list: ...
58 views

### inset legend from top right corner / find size of swatchlegend bounding box

The question is the following. Using Inset, we can insert a legend in a Plot (in a Graphic, in general). E.g. ...
57 views

### Defining special function or variable for a derivative in mathematica

I have a question in Mathematica, I would appreciate it if you possibly answered me. What can I do for defining a special variable for derivative of arbitrary variable. For example, imagine I have a ...
36 views

### Scaling the output of TemporalData object

The RandomFunction generates an output in the form of TemporalData. How can I plot a scaled version of this data, e.g., all values divided by $n$ with time kept fixed? I read this post but couldn't ...
70 views

### How do I solve a system of equations for only one variable quickly?

I have four order-2 polynomial equations in four unknowns. Call the unknowns x1,x2,x3,...
52 views

### Difficulty achieving the desired output configuration [on hold]

In order to describe the associated issues please see code sample below. The code presented is a simplified to include only whats needed as to better communicate the problems at hand. Following code ...
102 views

### Alignment of TreePlot

I want to construct a binomial tree using TreePlot but have troubles with the alignment. The code ...
29 views

### How to derive finite-difference scheme automatically on a quite general stencil

This question is a generalization of the following one Derivation of numerical scheme for linear transport equation on a variable stencil. Statement of a problem Let's consider quite general ...
29 views

### Second order differential equation, with term from previous numerical solution

I have a second order differential equation, in terms of a term that was previously obtained from numerically solving another equation. Numerical solution of equation before 2nd order equation: ...
95 views

### Comparison between numerical solution of nonlinear ode and nonlinear ode of second order

Background Let's consider the following initial value problem for nonlinear system $$\begin{cases} E' &=& 1 - n_e, \\ n_e' &=& -8\,n_e\,E, \end{cases} \tag{1}$$ with the following ...
42 views

### Evaluation of InverseFunction at the boundaries of its domain

Folks, I want to numerically evaluate a InverseFunction h[x] close to the edges x5 and ...
62 views

### How to fix internal error “too much recursion” when trying to compute a definite integral

I'm completely new to Mathematica. I got a 14 day free trial and I'm using the online version. I'm trying to use it to check the results of an integration I performed by hand. But I'm not getting any ...
47 views

### How to get the values out of Alternatitves?

Saying we have something like: SomeFunction[ ... { Alternatives[1, 2, 3] :> "something" } ... ] How can I know if ...
45 views

51 views

### finding invertible matrix $g$ such that $gAg^{-1}=B$ [on hold]

So I have two matrices $A$ and $B$ with dimensions $78\times78$. Is there any way to find such a $g$? I tried rewriting as $Bg-gA=0$ and using ...
83 views

### Replicate an image from Documentation Center (EulerMatrix)

EDIT I try to produce an image similar to that (see here) but this time with an ellipsoid. I hope I am not wrong but the code that creates this beautiful image is not available in Mathematica's ...
44 views

### Is it possible to somehow parallelize PadeApproximant in Mathematica?

Is it possible to somehow parallelize PadeApproximant in Mathematica? I'm dealing with a too long function (including exponential and trigonometric terms) in ...
181 views

### Getting $e$ closer than $0,001$?

Everyone knows that $\sum \frac{1}{n!} =e$. How should I make a program in Wolfram Mathematica, that tells me, how many members I need from the sum, to get a number, with mistake smaller, than ...
75 views

### Mathematica suspends long calculation [on hold]

I have the following weird problem: I am performing some monte carlo simulations through a simple do loop, where each round takes about 1-5 minutes. I was running 1000 or so overnight, and realized ...
58 views

### Function where variable is integration bound

Lets say I have a function of the form: $f(T) = T^4 \int_0^{1/T} \frac{x^3 dx}{e^x-1}$ This is an example of the situation I am describing not a unique problem. I want to define it as a numerical ...
24 views

### If the pattern changes in a nested List

I have a nested list in which part 2 of each sublist repeats itself a number of times before changing, i need an if condition for when part 2 of the next sublist changes from the prevous sublist. ...
80 views

### Solving cubic equation with unknown coefficients

I am trying to solve a cubic equation with unknown coefficients (p and t), here is the code: ...
158 views

### How to realize a Harmonic Tool like as CorelDraw [duplicate]

I get a rectangle and a circle like following: The Harmonic Tool of CorelDraw can transition the rectangle to circle ...
305 views

### How to take and evaluate a specific part of a list without evaluating the rest?

I have a large list, for example, lis = {x + y, x y, Sin[x] y + Exp[y], x^2 y} and its elements depend on variables x and ...