# All Questions

803 views

### How can I evaluate only a single step of a recursive function?

Let's say have a simple recursive function for the Fibonacci sequence f[0] := 1 f[1] := 1 f[n_] := f[n - 1] + f[n - 2] but I want to see how it will expand in a ...
466 views

### Using NDSolve to solve a system of coupled PDEs

I am trying to solve the Gross-Neveu model in one dimension for a specific soliton initial condition. I am trying ...
175 views

### Display full path of current notebook on title bar?

Is there a setting in Mathematica notebook interface to get the title bar to display the full path to the current notebook?
332 views

### How to combine ListPlot and ListPlot3D

Suppose I have a plane drawn by ListPlot3D and I have one intersection of that 3D image drawn by ListPlot. How can I combine ...
222 views

### Connecting to Microsoft SQL with version 10

After upgrading to version 10, functions relying on a connection to a Microsoft SQL database no longer work. When I attempt to open a connection with something like: ...
665 views

### Upload a file using a WolframCloud WebForm

I tried to create a Webform in WolframCloud that asks/browses for a file and then uploads it to a specific folder. The following are the directions I investigated but it does not work: ...
157 views

### Equivalent command to the Maple indets command

This carries on the discussion here and here. I had mistaken Variable[] to give you ALL variables in an expression, but apparently, it is not meant for that. <...
85 views

### Creating a matrix from a list of simultaneous equations

I have a list of n simultaneous equations of the form, w A[n] = (K[n,n+1]+K[n-1,n])A[n] - K[n,n+1]A[n+1] - K[n-1,n]A[n-1] ...
105 views

### Pattern for finding matches that are different [duplicate]

I am trying to solve the following problem. I have tuples of size 3 {{a, b, c}, {a, b, c}, {a, b, c}} I would like to find cases where all the elements in a ...
47 views

### Automating constructor definitions (OptionValue eval time)? [duplicate]

I'm settling in on a programming pattern for "constructors." I can illustrate the pattern with the following example, which defines a constructor newBar for "...
465 views

### 2D smoothing spline interpolation

Does Mathematica have 2D smoothing spline interpolation built in? I requires an interpolation method with smooth first derivatives and cubic bivariate splines fulfill this nicely. In python I would ...
492 views

### Simplifying general solutions of differential equations (driven harmonic oscillator)

Solving general differential equations in Mathematica usually leads to somewhat unsightly results. As an example, consider the solution of the driven, damped harmonic oscillator: ...
142 views

### How can I connect the local minimum-value points between a series of curves by dotted lines?

I have a set of data obtained by NDSolve. After I plot it, I want to indicate some feature of the curves. For example, I want to link the local minimum-value points between these curves by dotted line ...
102 views

### Using expressions in Text

I want to use Text to add some labels to a graph and was wondering if it is possible to use expressions inside Text? Here is a MWE of what I am trying. ...
571 views

### Total much slower in version 10

Issue introduced in version 10, fixed in 10.0.2 Compilation nowadays may give very fast functions. Here is an example for finding the sum of a list of machine numbers, just as the built-in function ...
143 views

### How to remove recursion, and write it functional and efficient way?

I wish to implement the following recursion efficiently. ...
88 views

### Conditional replace of a column

Im trying to replace the value in the Nth column of a list if a condition is true, returning the modified list. I've tried modifying the answer from 61219 and been through most of related questions ...
268 views

### Difference between double quotes

I have a notebook and I enter something like PlotLabel->"my label with dynamic number "<>ToString[strange] and I get errors like However, the double ...
361 views

### Find extreme values in a polynomial expression

I have been hunting down and could not find an answer to my question. As I've now been struggling for quite a while and believe it is a simple trick that's preventing me from getting over this problem,...
369 views

### Help recreating a gif

For my math class I am trying to recreate a mathematical GIF. Here is the GIF I wish to make: At this point I think I have a 3D function that would work to lay the hexagons on to. ...
124 views

### Cluster a time series by labels

I have a time series, tab delimited dataset with the following format ...
798 views

### How to calculate position from 3 dimensional acceleration data?

I discussed this problem yesterday with Pickett here. We concluded that the best solution may be just Interpolate and then ...