# All Questions

4answers
2k views

### Use Mathematica to calculate the area enclosed between two curves

use mathematica Hence, calculate the exact area enclosed by these curves using Mathematica. $f(x)=x^3$ and $g(x)=x^5 - 2 x^3 - 3 x$ i have got the graph...now I'm stuck with finding the area
2answers
313 views

### Approximate value for the area between the curve

I've got this task: Use Mathematica to obtain an approximate value for the area between the curve $y=1/4$ and the x-axis over the interval $[1,2]$ with $50$ subintervals using the left ...
1answer
109 views

### Typing (and executing) expressions with multiple superscripts

I am trying to type (and evaluate) expressions of the following form: $$G^{a,b}$$ into a mathematica. I've tried the obvious G^(a, b) or ...
1answer
209 views

### Real and Imaginary parts of solutions to a complex linear ODE system

Consider a complex linear ODE system $x'=Ax$, where $$A=\left( \begin{matrix} 0&1\\ -2&-i \end{matrix}\right).$$ One can first find the eigenvalues and eigenvectors using ...
1answer
93 views

### What ProcessEstimator Options can I use with FractionalBrownianMotionProcess

I can generate an fBm process: ...
2answers
340 views

### Why PlotLegends doesn't give the legends ？

I am using Mathematica 9. The problem I have is with plotlengends, in particular, ...
3answers
758 views

### Graph and Markov Chain

I have the following code: proc = DiscreteMarkovProcess[1, {{0.6, 0.4}, {0.3, 0.7}}] Graph[{"A", "E"}, proc, GraphStyle -> "DiagramBlue"] How can I 'force' ...
1answer
81 views

### How to make DocumentationTools palette useable?

I am writing the documentation for my package using Wolfram Workbench 2. But when I open DocumentationTools under Palettes, I get this unpolished piece of junk: The top half is a total waste of ...
0answers
245 views

### Differential equations with a complex variable

Is Mathematica able to handle ordinary differential equations where the variable itself is complex? I am looking for solutions of ODE systems of the form \left\{ \begin{align} i\frac{da_1}{dt} ...
2answers
325 views

### Listplot imaginary part of complex numbers

I have the following list w={{0.01,99 +0.00001414 I},{0.15,6.6370108 +0.003144129 I},{0.25,3.9515722 +0.00854493297 I},{6,0.10041 +0.28132187 I}} and I want to ...
1answer
430 views

### Computing the Hurst exponent or fractal dimension of fractional Brownian motion

The Hurst exponent is related to the fractal dimension by noticing that the fractal dimension $D$ is equal to $2-H$, where $d$ is the intrinsic dimension and $H$ is the Hurst exponent, for 1-D ...
0answers
92 views

### SyntaxForm not correctly parsed by FrontEnd

When using TagBox with SyntaxForm, I noticed sometimes it is not well parsed by the ...
0answers
106 views

### CPU usage remains at 13% even after I quit the kernel

I use Mathematica 10.0.0, and after I run it for a while (a few simple commands for example) the CPU usage (Mathematica.exe) remains at 13% even after the calculations are over. I quit the kernel but ...
1answer
357 views

### Import iTunes xml data and convert it into a dataset or table

I have an xml file with song data from iTunes (https://dl.dropboxusercontent.com/u/1012958/iTunes%20Library.xml) and I'd like to import it to Mathematica to do some statistics. I get an XMLObject like ...
2answers
500 views

### Plotting spherical surfaces

I am trying to make surface plots of squashed spheres. The spheres are defined by a list of points. For simplicity, consider the round sphere: ...
0answers
153 views

### Is this the correct method in using bootstrapping to determine a lower confidence bound?

Quite often in industry, due to cost and schedule constraints, decisions must be made on small sample size data. I have 4 cycles-to-failure values resulting from running samples to failure in a ...
4answers
541 views

### Set of integers not divisible by smaller set of primes

Let $p_n$ be the sequence of prime numbers, and $s(x,n)=$ the set of integers less or equal than $x$ that are not divisible by $p_1,\dots,p_n.$ I can define it as follows: ...
2answers
205 views

### VectorPlot differences between v9 and v10

The following code displays differently with v9 & v10: ...
2answers
272 views

### Advanced SQL-type select statements (filtering) on Datasets

I'm trying to improve on mathematica's handling of datasets. I'm currently writing this function that should do the following. Suppose I have a dataset with columns, e.g. ...
1answer
420 views

### Optimizing Monte Carlo simulation of a Pred-Prey model

My assignment and code As part of an assignment for one of my classes, I'm trying to run a "massive" Monte Carlo simulation in Parallel on the follow model: ...
1answer
342 views

### Plot one set of “x” with at least three sets of “y” in different scale

I'm sorry if the question is too obvious, but I haven't been able to find a straight answer for Mathematica. I have 1 set of "x" with at least 3 sets of "y" in different scales. I need to plot them ...
3answers
226 views

### I need to remove a line from a ParametricPlot

What happens is that when I make this ParametricPlot: ...
1answer
114 views

### Is undocumented \.bd = ½ bad to use?

I want to use \.bd which leads to ½ as part of the name of a symbol in the front end (e.g. ...
1answer
573 views

### ImageTransformation: polar to cartesian

I am working on something that requires the polar transformation of some images. I implemented this transformation with ImageTransformation: ...
1answer
95 views

### Getting message DSolve::conarg:

I want to solve a simple linear PDE about $p_0$ which is a function of ξ, ζ and τ. However, the boundary condition is defined at ζ = h, which is a function of ξ and ...
1answer
79 views

### How to select elements with a specific style of a list?

Suppose I have a list: where 3 'up's of the list are red(I've made it to Cell Expression as follows). ...
1answer
121 views

1answer
243 views

### Group dataset on two keys (GroupBy)

I would like to group the elements of row c of the following dataset according to the values in the columns a and b. That is Go from here To here And then I would like to print this on a grid, ...
1answer
132 views

### Animating a 2D Plot as a 3D Plot

This is a follow up question to the original question: Original Question The accepted solution (provided by @Mark McClure) can also be found in the original question. It is as follows. ...
0answers
189 views

### After editing a file Mathematica 10 interprets […]^2 as […(])^2

Bug introduced in 10.0 and persisting through 10.2 or later This is a very weird bug and I don't really know how to reproduce it, so I'll just copy-paste the whole code ...

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