All Questions

I'd like to draw a plot with the $x$ and $y$ axes labeled outside the plot and along the axes (with $y$ axis rotated)--not at the end of each axis--as in this Matlab plot. Moreover, I do not want to ...

I have the following code, an attempt to color the even branches of a tree... but it’s not working correctly: ...

According to this simple example program, the assumptions evaluated only with the Simplify[] function call. However, I wouldn't like to use Simplify[] because it can be very slow with longer ...

I am trying to simply do the following cVec = {a,b,c,d} From another expression, I obtain another vector, say, ...

I have a physical quantity (experimentally measured) lets say T whose variation I have measured with angle (theta in degrees). I want to find out the Fourier components of this quantity with respect ...

For the code below, I get several error messages once I click the "Enable Dynamics" button. However, once I run the code, the output works fine, so, if that is all I wished to do, I would just live ...

Well, the following function fun1 will be used thousands times (a single argument among these thousands one is called arg in the following) . Speeding is therefore critical for my code (KenKen ...

Can you please help me to solve and check true or false this system of equations ...

I am solving the following system of equations with Mathematica. $u'=-k_{1}ux+k_{2}x^2, x'=k_{1}ux-k_{2}x^2$ and I obtain the solution for x: $x(t)=\frac{e^{k_{1}C_{1}(t+C_{2})}k_{1}C_{1}}{-1+e^{k_{1}...

Pitty on me! Still a beginner. After using Mathematica for 8 years and spending an hour on google, I remained unsuccessful to find an answer of: How to extract the last element of the output of ...

How would I simplify these expressions into sum notation in mathematica? For example, in a 3 body system of the earth moon and sun. Where masses are ...

How can I DSolve this equation? ...

What do I need to do to make the text keep the same proportions as the rectangle even when I increase the image size? ...

I would like to take a large figure showing a sequence of individual plots and automatically split the into series of images showing the individual sub-plots (to be exported as animated GIF later). ...

Is there anything I need to add to my code so that the generated DXF file does not contain a diagonal line in the generated profile? ...

I wish to solve the following system of PDEs for h1, h2 using periodic boundary conditions and specified initial conditions. When I execute Mathematica complains that the boundary conditions are not ...

Im trying to model a 3 body system consisting of the sun, earth and moon. ...

In few words, I would make this graph: My many problems are the following: How do I plot a vertical line? What's the equation? How do I add the letters on the lines? How to make the Ticks like $...

I want to plot $z(F, x, \lambda)$ where I fix a few values of $F$ and $\lambda$ and see how it varies with $x$. With 2-d functions, I could vary the second parameter easily using a combination of <...

I am trying to solve numerically the following system of two coupled delay differential equations: $$\dot x(t)=-\gamma x(t)-\frac{\gamma}{4}e^{i\omega_0\tau_1}y(t-\tau_1)\theta(t-\tau_1)+\frac{\...

In mathematica, when I plot with the plot3D function, the output 3D surface graphics are not vector graphics (although I have saved them in .svg format). I want to ask, how can I output a 3D vector ...

I am trying to plot s w.r.t r (0,10). But because of inactive integral I am not able to. When I activate inactive integral, output is coming same as input. When I am trying to plot graph w.r.t r(0 to ...

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I am training a deep net on large training dataset. I read the tutorial from the following link: Training on Large Datasets. I have put each predictor-preditand tuple into a separate mx file. My ...

I have a Mathematica expression with about 900 terms, that looks roughly like this: $X_{1,1} + Y_{1,2} + Z_{1,3} + XX_{1,4} + XY_{1,5} + ... $ Is it possible to perform a fast method to copy this ...

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I'm very new to Mathematica. I'm just trying to plot some data, but Mathematica says there isn't a 7th element my data which is an array of 7 elements. The code before the plot is here: ...

I would like to plot the separatrices (or homoclinicorbits) in the equatorial plane of the Kerr metric as right panel of Fig. 1 in https://arxiv.org/pdf/0811.3814.pdf. My code is the following: ...

These are the three errors I was given. I so far wrote the code which was computing the polynomial interpolation but now I am asked to find those three norms: norm error mean norm error maximal ...

In the code below, how to make PlotLabel automatically show the name of the data sets (i.e., aa, bb, cc)? ...

The following Lagrangian is available: $$ L = (\omega(t))^2J(t,\theta(t))-m(\omega(t))G_gP(t,\theta(t)) $$ Here $\omega(t)$ is the angular velocity of the body; $J(t,\theta(t))$ - a variable moment of ...

Question: I am unsure how to graph the interpolated graph with the regular graph on the interval [1,4]. Not even the Show line works about im pretty sure its written correctly. Clear["Global`*"] f[...

So I have the following integral I wish to compute. The constants required are defined as: ...

I would like to first obtain the list of all possible 4 x 4 matrices from the followings ...

It is easy to specify the initial position for the slider in Manipulate, as pointed out in the answer to this question. However, when I wrap a ...

In one of my "Classic" slideshows, the numbering is corrupted. When new slides are inserted, they show up as slide number 0 (several of them), while the originals retain their numbers. Is there a way ...

For some reason when I type FindInstance[a + b == c && CoprimeQ[a, b, c] == True, {a, b, c}, Integers] Mathematica just immediately returns my input as ...

I'd like to implement a generic rule for expanding differential forms by the product rule. For instance, I'd like to transform the following PDE: $\phi \frac{\partial \phi}{\partial t} = \phi \nabla^...

Is there a way to have polymorphic function definitions in Mathematica? I looked around online and didn't anything discussing it.

I need to transpose the two following lists: data0 = {99.52267, 93.78726, 99.67644, 99.85036}; error0 = {0.21152, 0.37626, 0.16309, 0.10167}; Into ...

Update The code below works fine. Failed update of summary box was from a typo in the actual code. Admins can delete this question if needed. For a summary box that includes a calculated value ...

For each pair of the following functions, compare their asymptotic behaviour using the order notation. f(n) = e^n and g(n)= 3n^2

I'd like to flow text into a region defined by a curve, such as: ...

I have data of a function that goes like $f(x)\propto x ^\alpha $ for a certain range of $x$ and like $f(x)\propto x^\beta$ for another one. It is common in the literature to make a log log plot and ...

Prove that of two discrete random variables X and Y are independent, then H(X|Y) = H(X).

For example, You send out three messages for help: a smoke signal that has probability 0.1 of being seen a message in a bottle that has probability 0.2 of being found a carrier pigeon that has ...

By default output cells are grouped with the input cell from which they are generated (note the nested cell brackets on the right): Sometimes it is desirable to group manually input cell with ...

This is the code that doesn't work: ...

Compute entropy of the following random variables: the random variable X that takes the values 0, 1, with probability 1/2.