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Hi I have a two point conditions problem (controlled SIR epidemics via Pontryagin BVP), which is supposed to depend heavily on initial conditions, which break the problem into...
Asked on 07/19/2021
2 answerConsider this toy example:myDerivative[f_, x_] := D[f, {x, 2}]This defines a function myDerivative that takes in a function f and a variable x and takes the second derivative of...
Asked on 07/19/2021 by Sami
0 answerI have one question.I have got my data xy1 from Matlab.But when I import it into Mathematica,I get result as follow XY1 = Import["xy1.mat", Path -> "D:Matlabdata"]...
Asked on 07/19/2021 by Bo Zhu
1 answerI would like to write a program that would simulate the trajectory of an electron/photon passing through a 50-50% beam splitter and depending on which detector the particle is measured,...
Asked on 07/18/2021
1 answerI have an energy function which depends on the angles of the electrons({x} symbol for theta) and phase of electrons({y} symbol for phi). I am using NMinimize to minimize the...
Asked on 07/18/2021
0 answerint[r_]=-((557.310989080004 r)/((37.3042 - r) (-25.578 + r) (62.8822 + r) Sqrt[0.0345106153943703 - ((37.3042 - r) (-25.578 + r) (62.8822 + r))/(3000 r)]))This is the function of r...
Asked on 07/18/2021 by Immy Salam
1 answerSo I'm running NMaximize for optimizing a value and for constraints, I need the parameters to belong to a discrete set of elements. Basically, the constraint looks like,And @@Table[{Subscript[x,...
Asked on 07/18/2021
0 answerIs there a more compact way of summing certain elements of lists together when given a tuple of which elements to sum. For example if I am given the list...
Asked on 07/18/2021
1 answerThe elements of both lists are given as A={9,5,9,3}, B={9,9,5,5} In this case, how can I list the list {9,5,9} of the common elements of the two lists? (The order...
Asked on 07/18/2021
1 answerAssuming a linear concentration profile in a particle(sphere), I managed to make a SliceContourPlot3D for 2 linear concentration functions(a function of radius). I met some problems here:There are some strange...
Asked on 07/18/2021 by elapsed
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