# All Questions

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### Question about degenerate functions in Mathematica 10 [closed]

I found some functions included in "Combinatorica" package were obsoleted, such as MinimumVertexColoring, VertexColoring. Is there any other new replacement function for them? If not, what is the back ...
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### Force a negative square root to be interpreted as an I

I have expressions like $$\sqrt{-\sqrt{1+x^2}}$$ how can I force mathematica to systematically rewrite this as $$i(1+x^2)^{1/4} \quad ?$$
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### Is there a built-in function to do binary search?

Is there a built-in function to do binary search? Say, given a list (sorted) and a number, find the position which keeps the listed sorted when the number is inserted. I know that ...
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### Differential equation with a Heavisidetheta function running for ever

So I'm trying to get the solution of the following differential equation: ...
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I've been working with the FeynRules 2.1 package in Mathematica 10. If I download the MC4BSM_2012 FeynRules files and run the Mathematica Notebook I've got no problem in Ubuntu (A lot of warnings ...
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### NDSolve not able to solve a system of differential equations

Here are some basic equations ...
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### How to simulate Placed in workaround for PlotLegends ParametricPlot bug?

I'd like Legended output for call like: ...
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### Strange behavior of AssociationMap

here is what I've searched over stackexchange I'm on windows 8.1 x64 with Mathema... 10.0.2. sometimes, Definition[AssociationMap ]=Null I found ...
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### how to find curve fitting parameters without an explicit relation between x and y?

Let's say I have some experimental data (x,y) and I want to find some fitting parameters. But in my mathematical model, the fitting parameter are not in a simple equation that relates x and y. For ...
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### Logic Gates - How to show eight ways an AND function can be realized using negative and postivie logic [closed]

I am asked to use negative and positive logic (using bubbles on the gates) to show eight ways that an AND function can be realized. Im not too sure how to do this. The only way I can create an AND ...
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### Overlap an image in real time

I made a real-time face detector with Mathematica, and I want to put an image where it detects the face. Here is my code: ...
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### Select From List of Nested Associations

I have an association: ...
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### Code turns dark blue after trying to run it [closed]

I have a large amount of data in my N-Body Code. I imagine Mathematica doesn't really like this, but is there any other reason for my code turning a navy blue colour after I try to run it?
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### Solving a second order non-linear differential equation

I am trying to solve the following equation DSolve[{u''[t] + 4 u[t] + 0.1 u[t]^3 u'[t] ^2 == 0, u[0] == 1, u'[0] == 1}, u, t] Unfortunately Mathematica is ...
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### How to Insert Page Break at end of Repeating Block with “Evaluate and Delete”?

This is with version 10.0.2 I have simple notebook template to generate some bingo cards. I would like to have them print two to a page. However, no matter what I do with the page break it will not ...
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### Discretizing regions with pointy boundaries

I'm trying to discretize a region with "pointy" boundaries to study dielectric breaking on electrodes with pointy surfaces. So far I've tried 3 types of boundaries, but the meshing functions stall ...
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### How to save all notebook outputs as pdf file

I have produced a lot of graphs and tables in my notebook. I am trying to save all these outputs as pdf file. As we know form Rodney and form Mr. Wizard , we can not use save as function. I have ...
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### Expand a fitting using FindFit[]

I need to implement multidimensional optimization using FindFit[]. But it's essential to exclude some parameters from the main procedure of optimization and to move on from direct optimization in ...
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### How many CPUs does gridMathematica support?

In the features section it is written that: gridMathematica is an integrated extension system for increasing the power of your Mathematica licenses. gridMathematica Server gives Mathematica users ...
236 views

### Label multiple edges between same vertices

I have a simple graph with multiple edges between two vertices, say: Graph[{ Labeled[a -> b, "A"], Labeled[a -> b, "B"] }] Unfortunately, Mathematica ...
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### Filling to Axis as Arrow

In version 9 I could do the following with the output as shown. ...
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### How to input a dynamically changing parameter in NDSolve? [closed]

I am trying to solve a system of DEs with additional conditions, and one condition depends on a parameter. Let us consider the following example: ...
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### Simplification of algebraic expression

I found an entry of a matrix from two different methods using mathematica. Which are given as; g/(Sqrt[2] Sqrt[1 + g^2 - Sqrt[1 + g^2]]) and ...
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### Using DiscretePlot to graph the Riemann sum of a parabola

I want to graph the Riemann sum (upper sum) of $y=x^2$ with $1\leq x\leq 4$ using 6 rectangles. I want the rectangles to be green. On the Wolfram Mathworld website, I can render exactly what I want ...
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### Define column types in a Dataset - Failure on append and Typesystem

I have a basic function that populates a Dataset according to user specified parameters. ...
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### How to apply # on different lists? [duplicate]

If I have list1 = {1, 2, 3, 4} list2 = {5, 6, 7, 8} How can I do so, that function[#1, #2] takes ...
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### PDE: Solving Burgers' equation with initial value given by a self consistency equation

I would like to solve in Mathematica the well known inviscid Burgers' equation \begin{align} \begin{cases} u_t(x,t) + u(x,t)u_x(x,t)= 0 \\ u(x,0) = m(x) \end{cases} \end{align} where m(x) ...

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