# All Questions

149 views

### How to ReplaceAll independent of depth?

I have a big list which in principle can be described as this more compact list : ...
198 views

### Developing easy code to apply Delta Method to generate prediction bands for custom distributions

I think that this is an interesting issue for all those who when to not only adjust one prediction function, but also to obtain the prediction bands to asses the graphical or tabular error I'm trying ...
128 views

### Replacing more than one element from a Sublist

The following expression allows me to extract the value of x and y: ...
131 views

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108 views

### How to widen PlotLegends?

I have a plot whose legend, when placed at the bottom, is two lines rather than one: ...
203 views

### Front End Find feature broken in Version 10 with OSX Mavericks?

I installed Mathematica 10 and on my Macbook-Pro with OSX Mavricks. I was most frustrated to find that the front-end Find feature doesn't work. Do others have this problem? Is it possible something ...
102 views

### How can I define a function that takes a list of reals?

I'm trying to define a function f which takes a list of reals. My purpose is to build a function which I can give a list of reals, integers or strings and have it ...
159 views

### How to check a solution of a partial differential equations?

Here is a system which Maple can solve, but Mathematica cannot. ...
123 views

### Few quick Mathematica questions about Dictionary

a. Get the list whose elements are of the form {language,number of words in dictionary) I tried this, and it gave me the number if words in dictionary, but I don't know how to get the language part: ...
198 views

### Combining solar system planets orbits and positions in Graphics3D and Show

I am building an animated model of the solar system, where I would like to display the OrbitPaths of the planets along with their ...
211 views

### Mathematica can't minimize a function

Mathematica seems not to be able to minimize this univariate function over integer arguments, $r>2, r \in \mathbb{Z}$. ...
208 views

### Cropping a Plot without rasterization

Suppose that I make a plot of $x^2$ vs. $x$: myPlot = Plot[x^2, {x, -1, 1}, Frame -> True] If I click on the plot, I see the orange handles with which I can ...
729 views

### Plot Fourier transform of $\sin (2 t)$

I'm trying to plot the Fourier transform of $\sin (2 t)$. I tried using the FourierTransform Function (I'm expecting a peak at w = 2) but it gives me undefined at ...
196 views

### Is it possible to give the closed-form of the stiffness matrix of triangular prism element?

Suppose the vertices of triangular prism are 1, 2, 3 (bottom triangle), 4, 5, 6 (top triangle), the coordinates of the vertices are $$(x_i, y_i, z_i), i=1,2,3,4,5,6.$$ We can write the stiffness ...
185 views

### I want change gamma function form into beta function form

I want to integrate below form ...
220 views

### Exporting SmoothHistogram plot data

My program produces a large data set, which is distributed by some unknown function. I've used SmoothHistogram to visualise it crudely as a probability distribution ...
283 views

223 views

### Output precision

I've solved some equations using FindRoot and then computed some values. Now when I print the output, I only get a certain precision {{0.01, 496.983, 61.3147, ...
357 views

### Import large amount of data with time stamps

I have a large data file (150 000 lines) which I want to import in Mathematica. The first few lines look like this ...
1k views

### large matrix eigenvalue problem

I need solve a very large complex matrix (not sparse and not symmetry) eigenvalue problem, e.g., 1e4*1e4 or even 1e6*1e6. How large dimensions of the matrix can Mathematica support? And, how about ...
888 views

### Plotting a complex function [duplicate]

What does it mean if this message appears: {Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0,Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0} must be a list of equalities or ...
504 views

### ListPointPlot3D seen from above

I have a couple of {x,y,z} points a = {{0, 1, 0.}, {50, 1, 0.018931}, {100, 1, 0.02}, {0, 2, 0.}, {50, 2, 0.131}, {100, 2, 0.2}}; and I'm visualizing them with ...
121 views

### Only perform a symbolic differentiation once

I want to define a function that involves a differentiation step that Mathematica can do easily, which might be of the form ...
609 views

### Running a Numerical Simulation on a System of Differential Equations with unique initial conditions

I have a system of differential equations as follows: ...
222 views

### Problem with large values in ParametricPlot

I've got a question quite similar to No 18163:Problem with high parameter values in ParametricPlot, but the solution of that problem did not work for me. So I hope you may have another tip. I want to ...
223 views

### Separate an array in two arrays, the even and odd terms being separated in these two arrays

How can I separate the odd terms in one array and the even terms in another array,i.e., go from a={1,2,3,4} to aeven={2,4} ...
583 views

### Why doesn't my Manipulate work?

I am new to Mathematica and reading my way through a few books. Playing around with Manipulate and I noticed the following does not work: ...
243 views

### Thread over a nested list top to bottom until non-list elements are found

I have a nested list: list = {1, 2, {3, 4}, f[a], {2, h[b]}} I would like to apply a function g to all elements of the ...
104 views

### TextCell going awry due to ImageResolution (in Mathematica 7)

Can anyone see how to fix this text display? The example is from a larger project. I need to export the graphic at high resolution, but the text is going wrong. ...
1k views

### How can I get a Taylor expansion of the Sin[x] function?

How can I get a Taylor expansion of the Sin[x] function by the power series?
148 views

### How to take input from user?

Since I'm new to Mathematica I want to have a Notebook which takes inputs from user and returns average of the inputs entered and plots it on x-y coordinate. How can I do this?
562 views

### How do I make my discrete plot thicker?

I am making a discrete plot and a regular function plot together. But my curve is so thick that for color-blind people, it's pretty much impossible to see the black dots of my discrete plot: ...
502 views

### How to solve this integral

I'm trying to deal with this article, but I don't understand how equations 5.9 and 5.10 were obtained. I tried to use Mathematica 8 to solve it, but the answer was different. I have a problem with ...