# All Questions

50 views

### ImageAssemble and Export gif takes too much memory

Errr.... First Let's create some gifs: ...
129 views

212 views

### Filtering of an unwanted frequency through a Fourier Transform

I have a data set with evenly spaced data points. The plot is frequency vs. intensity. The overall shape of the plot is an upwards curve into a plateau, this cannot be seen in the data as this is an ...
249 views

### How can I make FilledCurve smoother?

In How can I generate and randomly assign color to annular sectors? J.M. showed an interesting way to create a sector graphic using FilledCurve. Unfortunately it ...
61 views

### Forcing a locator button to remain on the surface of a sphere

This question may or may not be possible and might be a hard one to answer. Suppose that I have a sphere centered at the point (1,2,-1) with radius 3. Is it possible to place a locator button on the ...
247 views

### Does Mathematica have an equivalent of C's nextafter?

In C (and many other programming languages), there is a function double nextafter(double x, double y) which takes two (IEEE 754) floating-point numbers and ...
442 views

### Does Mathematica have an equivalent of Python's float.as_integer_ratio?

The Python programming language has a float.as_integer_ratio(x) function which exactly converts an IEEE 754 floating-point number into a numerator/denominator pair ...
96 views

### Changing from Dashed to Solid

I have: Graphics[{ Blue, Thick, Arrow[{{0, 0}, f1}], Arrow[{{0, 0}, f2}], Red, Arrow[{{0, 0}, f1 + f2}], Dashed, Blue, Line[{{-9, 0}, {12, 0}}] }] ...
73 views

### How to reduce trigonometric expressions under special conditions

For the following problems I used "FullSimplify" and "TrigReduce" but I manage to reduce more by hand. ...
82 views

Consider: ...
89 views

### Undo history cleared after removing comments - bug?

If I've written some code followed by a comment, like this: x(*y*) and I remove the comment by first removing the right delimiter and then the left, my undo ...
84 views

...
105 views

### NIntegrate and Sum give different results in summing functions

I am using these two functions: ...
83 views

### Diff eqs can be solved?

I'm trying to solve a pair of coupled differential equations, but am having trouble making DSolve evaluate my equations. ...
67 views

### Import a jpeg file and a mov file and display them side by side

I am planning to use Mathematica for a presentation. In one of the slides I need to place a jpeg file side by side to a mov file. ...
40 views

### Create graph K5, delete 2 edges and 2 vertex, create adjacency matrix [duplicate]

I need help about this problem. I should create graph K5, delete 2 edges and 2 vertex from it and from the new graph create adjacency matrix. I have poor knowledge and i don't need anyone to solve the ...
110 views

### Why doesn't Plot draw function within prescribed range?

I have a function: TheoreticalFunction[x_] = 2 / Pi * ArcSin[x] And trying to plot its derivative: ...
159 views

### Creating truth tables [closed]

I want to write a module in Mathematica that receives a Boolean function f. The module should write on screen: Truth table of function ...
207 views

### Gradient in a plotstyle

I'm trying to replicate the figure below. Now a nice first approach to do this is by using Mathematica, by making some kind of contourplot with circles and just add a gradient to the contourstyle. Now ...
85 views

### Creating Matrix,Inverted and Upper Triangulate inside Module

I was trying to fit this into a module but I didn't have any luck. And for some reason it won't Inverse the Matrix. Here's the code: Input: ...
35 views

### Recurrence equation [duplicate]

I need to print the first 10 elements from the string which is a solution of a recurrence equation. If there is a 5 in the elements of the string, then that element should not be printed. For ...
55 views

### Transformation syntax with shortcuts to a more explicit syntax for an equation

I would like to write the following code line without the signs @#%^&*?! Sequence @@ (XMLNote[#1, m] &) /@ attributes I have made this code but it seems ...
183 views

### Using NDSolve within Manipulate

I'm trying to use NDSolve inside manipulate. Specifically, I have a series of differential equations with coefficients, k1, k2, ...
39 views

### Where can I find mathematica documentation about @@@? [duplicate]

For example, to build a rule from 2 lists {a,b,c},{1,2,3},I use : Rule @@@ Transpose[{{a, b, c}, {1, 2, 3}}] : {a -> 1, b -> 2, c -> 3} OK, but how @@@ works ? (Black magic for me) I am using ...
71 views

### Descending order of Permutations using Select[Tuples[{5, 4, 3, 2, 1}, {3}], OrderedQ]

I was wondering if there is a possible way to still use OrderedQ and get a descending order of permutations: This is Ascending order: ...