# All Questions

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### How to use Mathematica to help me get highest score in every layout? [closed]

The game is hitting the headline in these day and everyone can click this link to play it.The game have a very simple rule like following: Game Rule It will give you a initial layout when you click ...
42 views

### Solving ode which solution oscillate violently

This is a ordinary differential equation: y[x]/(-1 + x^4)^2 - ((1 + 2 x^2 + 3 x^4 - 2 x^6) Derivative[1][y][x])/(x - x^5) + Derivative[2][y][x] == 0 I want to ...
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### Export of all notebook files as text files

I want to export all my notebook files located in a root directory as text files. Below is a simple code that I use. Ho can I export "only" the necessary text content of each notebook file? ...
27 views

### Solving equations but cannot define argument [closed]

Hi everyone I am new to mathematica and I really need help now. The question is like this: I defined a function H(e1,e2) and I want to solve PDEs like ...
15 views

### How to change the default stylesheet?

How to change $\textbf{default}$ output font color in Mathematica? for instance : how to set following style as default And how to set the default magnification to 200% instead 100%
44 views

### expressing a rising factorial as a polynomial

I have an equation in $x$ as follows: $f(x)=\prod_{j=0}^{k}(j+x)=x.(1+x).(2+x)\cdots.(k+x)$ I want to express this as a polynomial in $x$, i.e., as $a_0x^0+a_1x^1+\cdots+a_kx^k$ I tried doing the ...
25 views

### How to apply Image3D dynamically [duplicate]

I have a 3D image which is made up of a number of 2D slices. I want to select mophological components dynamically by clicking on them as done here for each slice. Then form a 3D image consisting of ...
41 views

### How to list all functions in a package? [duplicate]

I got a package which can be loaded in MMA. The manual for the package does not give demonstrations of all functions/commands. Hoe can i find all the commands in the package?
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### portions of plot missing for a relatively simple function

I am trying to produce a graph of the linear dynamic system response to a step input. The code is as follows: ...
42 views

### Metric Simplify & grouping

I'm changing a basis from one metric to another. When simplifying the result Mathematica doesn't seem to grasp all the possible simplification: ...
25 views

### Is there a way to save the output from integrate as a function? [closed]

Is there a way I can save the result of my integration as a function? I would like to be able to assign the result of this integration to a function which accepts ...
48 views

### FunctionInterpolation on a 2D function does not match original function when plotted together

I met with a problem when trying to find the interpolation function of a 2 variable function. The function is like below (already simplified for brevity): ...
103 views

### Is there an internal logic behind short form symbols, such as @ (Prefix), @@ (Apply), /@ (Map), /. (ReplaceAll) [closed]

To me, function names (such as Apply and Map) seem more intuitive than their symbols (e.g. ...
122 views

### Map vs listable [duplicate]

What's the difference between setting a function's attribute as Listable and using Map? I understand that ...
78 views

### Free-fall air resistance problem

I´m working on a free fall problem and I got an equation with variable $k$ when the situation has air resistance. Then I compared with no air resistance equation ($-4.9$, considering t variable). So, ...
71 views

### How can I identify which solution triggered the WhenEvent?

I am using NDSolve for problems like this: ...
81 views

### Drawing spheres with texts on top of each other without overlapping [closed]

I want to use Graphics3D to draw a sphere with a text on it. Then, I'd like to draw another sphere (with a different text on it) on top of the first one. This is the code I'm using ...
48 views

### Subscripted variables give errors in Module expression [closed]

I have following problem. I want the R not to calculate before the integration but substitute later as a function of z. My Mathematica codes look like: Codes like big, (sorry) but most of them ...
60 views

### Ramanujan's asymptotic formula for $p(n)$

The following expression is the exact formula of partition function. Ramanujan's asymptotic formula for $p(n)$ is following $$p(n)\sim\frac{1}{4n \sqrt{3}}e^{\pi \sqrt{2n/3}}$$ Can I use ...
52 views

### MMA gives error when a different PDF expression is used for the same distribution

I have the following MMA code. Note that the function I declared at the very beginning is the PDF of square of a Nakagami Distributed random variable. With $m=1$ and $P=1$, $f(h)$ becomes Exponential ...
36 views

### Polynomial Equation/Function With Even Degree Order [closed]

I have the following data for $x$ and $y$ axis, which I am reading from an Excel file by using the Import command and plotting by using the ...
71 views

### How to use Except[] inside of Pick[] [duplicate]

Pick[{1, 2}, {0, 1}, Except[0]] returns {1, 2}, the first element of which I did expect to be excluded. What is the thing I ...
105 views

### How can I use Mathematica to make a captcha image?

This was inspired by this post which is about the serious business of website deployment in the Wolfram Cloud, and interaction with Google's reCaptcha system. I started thinking of how to make those ...
50 views

### How to find this probability with PDF from TransformedDistribution?

I need to find the expression for the following equation, where $m>0$ ...
66 views

### Inconsistent Integrate behavior?

Evaluating the following integral with Mathematica Integrate[q0/(-1 + q0^2), {q0, 0, A}] gives a conditional expression ...
57 views

### Interface design to replace cascading dialogs which don't work

I would like to make a nice Interface of a simulation I wrote, but i don't know how. I want that you run the code and then a window asking for input of some values appears (either in the same ...
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### How to understand the different output of two UnsetShared?

Update From technical support, Thank you for contacting Wolfram Technical Support. I understand that you are reporting an issue with UnsetShared deleting the shared variable after a second ...
54 views

### How to translate/convert UTF-16 code to its corresponding word/characters by Mathematica?

I'm using Mathematica10.0.2 on my Win7. Recently I crawled some websites by mathematica and within the information returned by URLFetch there are plenty of UTF-16M codes. These UTF-16M codes are ...