All Questions

I have a data set composed of a X variable (col 1) and two Y variables. Y1 shows roughly 40 peaks while Y2 is a linear function. Is it possible to find the approximated 40 Y2 values for which Y1 is a ...

Consider the following code : ...

I have the following code ...

I am trying to increase the precision of the code ...

I have been searching for a mathematica package that can calculate the graph Crossing number of a (small) given arbitrary graph (the graphdata of known graphs doesn't help me). Before I write my own ...

We are trying to simplify expression (-1)^(6/7) (1+(-1)^(2/7)), which is actually -2 Cos[π/7], using different methods. None of ...

CountryData[ "UnitedStates", {"Population", 2014} ] 322 422 965 people CountryData[ "UnitedStates", {"Population", 2015} ] ...

This is my first time using mathematica so I'm pretty confused. This question is based on the Sierpinski Triangle. The figure below shows the percentage of total even entries and total odd entries ...

I am trying to insert error bars in a plot with a log scaled y-axis with ...

I am not very good with Mathematica but I am trying to solve the following initial value problem $y''(t)=\lambda_1 y'(t)e^{y(t)}+ \lambda_2 y'(t)e^{y(t)},$ $ y(0)=0$ I have tried first the ...

The question is: for which values of the parameter $a$ the equations $$4^{x+1}-3\ 2^{x+3}=2^{x+4}-64 $$ and $$(a+30) \left(-9^x\right)+3^{x+4}+27^x=a \left(81-10\ 3^{x+1}\right) $$ are equivalent? ...

I am trying to plot a set of layers with different values of densities (density profile). Geometry ({x,z} values) of 15 interfaces of layers look like this: while ...

In order to descrive the multifractal behaviour of a set, Baumann provides a code based on the following function ...

I want the following Gaussian function integrated for both x and y however it is not evaluated by Mathematica. ...

I have a neural net of the following form: ...

I have the following information x1 < x3 < x4 < x2 y1 < y3 < y4 < y2 x1 + x2 = x3 + x4 x1 + a = x3 x2 - a = x4 Is there any possibility for me ...

I have to compute $CA^{-1}B$ and $CA^{-1}x$, where $A,B,C$ are conformable matrices and $x$ is a vector. I'm not sure if it helps, but $A$ is symmetric and positive definite. The $A$ matrix will be ...

I would like to define a function with BlankSequence. Here is a simplified example. xPlusy[x_, y__]:= x + Plus @@ {y} Now I would like to try ...

Given a dataset like this: ...

I would like, for presentation purpose, to be able to draw sphere with vectors inside (basically I need to work with Bloch spheres). For example this kind of results : I need to be able to add ...

I am trying to do the following with rule-based pattern matching (f1[t] f2[t] f3[t]) /. {x__ -> n[ Product[x[[i, 0]][om[i]], {i, 3}]]} // Quiet which ...

I have a polynomial function which is in x, I am trying to plot this out but could not able to plot. how to do this ...

I'm not sure why I'm getting the error message "Throw::sysexc: Uncaught SystemException returned to top level. Can be caught with Catch[[Ellipsis], _SystemException]." when trying to compute ...

I have a very complicated, long (thousands of terms) expression that boils down to a form of expr = a1 Exp[b1] + a2 Exp[b2] + a3 Exp[b3] Note that all a and b ...

So I have a 3D graphics with axes and ticks, but sometimes when I rotate the grahics the axes change their location to different edges, and I want this to be static. How do I do this?

i have been having a hard trouble working on excercise 4a since i cannot understand how to differentiate a trig function that has x in degrees. How is it done? .

I am solving multiple differential equations using ParametricNDSolveValue function. Later, I am plotting these differential equations using plot function inside manipulate function. So, basically I am ...

I have seen this error NDSolve::ndsz many times when I use NDSolve to get the solution of a non-autonomous ODE. I try but all ...

When I use SendMail to send email a dialog box opens asking for my Login Credentials. Email is sent successfully when I enter my email account password. However, ...

This is a seemingly trivial question, but I'd like to understand how to correctly treat matrices (and I guess rows/columns in Mathematica). I'm having fun figuring out how to express rows and columns ...

When set context unique to this notebook: ClearAll @@ { $Context<>"*" } Clear["`*"] can both clear the variables I assigned. I just wonder what's the ...

Similar to the Mathematica command: ExampleData[{"Geometry3D", "SpaceShuttle"}] Do you have something similar to that generates an artificial satellite (a ...

I need help. How do I create a plot like the one shown below in Wolfram Mathematica? It's the upper-right picture, for value of p = 1/2, that I want. Is it ...

I am trying to simplify the following conjugate expression with assumptions. ...

I used the following code in Mathematica 8 and it worked. Running the same code in Mathematica does not. I am very much open to suggestions to reach the same output plot in a clearer way. The code ...

I want to overlay two objects of SmoothDensityHistogram using Show, in order to highlight a region of the shared plot space. However, the top object completely obscures the bottom one. I tried to ...

I'm trying to train a neural network on Mathematica 11.3, but NetTrain won't work and gives the follwoing error: ...

I have seen this post and my own post from last year. This question seems different. Problem: I can't get the numerical labels of one of the ListPlot axes to display in non-scientific notation. ...

A circular arc $R_2$ can be defined parametrically as $R_2 = \langle x(s),y(s) \rangle : s\in[-s_0,s_0]$ (see code below for specific $x,y$ definitions) where $s_0$ is given (I must make the arc this ...

I am solving a generalized eigenvalue problem $$\mathbf S\,\mathbf x = \lambda\,\mathbf M\,\mathbf x$$ w/ $\mathbf S := \mathbf B\,\mathbf A^{-1}\,\mathbf B^{T}$, and $\mathbf A$ is a sparse ...

I'm looking to use WSTP to make functions defined in a C MPI application available to a remote Mathematica kernel. I've got this working for a non-MPI version of the application, but now wish to have ...

I'm trying to plot 2D vectors in Mathematica. Built in functions don't really work for me because I want to plot vectors of matrices from the origin to the their coordinates with an arrow on their ...

I have not been able to find the answer for the following problem, and would be happy to be educated. I am writing a custom user interface around some code that has lengthy calculations. In the ...

I'm looking to create several plots comparing statistics for NFL teams. In particular, I want to compare yards per game (YPG) and points per game (PPG) since 2008. Can this be automatically pulled ...

I was working with Project Euler Problem 418 using Mathematica and got in trouble. I wrote a function to find the unique factorization triple which minimizes c / a for integer n. ...

I try to enter the following input, but receive an error message: DateObject["12/1/2016", DateFormat -> {"Month", "/", "Day", "/", "Year"}] despite having ...

I have a function which is in integral form: $$f_+(z)=\exp\bigg(\frac{1}{2\pi i}\oint_{C}\frac{f(\alpha)}{(z-\alpha)}\,d\alpha\bigg),$$ where $C$ is a unit circle. I want to take the Fourier ...

I want to plot y = 1 - (1 + x^4 - 2 x^4)/(1 + x^4 - 2 x^2 cos (2*omega*beta*L)) x = .2; beta = .5; L = 2; Plot[y[omega], {omega, 0, 3 Pi}] where I vary omega. ...

Let's suppose that we have the following equation ...

I want to solve 5 non-linear equations simultaneously, so I am using Solve[] function. Here is my code: ...