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I would like to make a small right hand with fingers that curl to illustrate the right hand rule in Graphics3D. Does anyone know if this is possible? For an...
Asked on 08/07/2021
2 answerI have to following list to plot (from FEM software) {coord xi, coord yi, speed (norm of) vi} :data = {{9.93371`, 3.60179`, 0.`}, {10.05561`, 3.4799`, 0.`}, {10.23147`, 3.33651`, 0.49062`},...
Asked on 08/06/2021 by Jocelyn Minini
1 answerWell, after reading a lot about how plotting expressions involving NIntegrate can take a lot of time, and how to overcome this issue with DSolve, I still have problems when...
Asked on 08/06/2021
1 answerWhen trying to plot the following function in version 12.2f[x_]:=x Exp[-x^2]F[y_]:=NIntegrate[Sign[f[x]]Sqrt[((f[x])^2)/(f[x]+1)],{x,0,y}];Plot[F[x],{x,-5,5}]this message appears. It happens also when using RealSign....
Asked on 08/06/2021 by JHT
3 answerI would like to ask if anyone knows how can we automate calculations of the following sumSum[HarmonicNumber[n]^2/((n + 1) 2^n), {n, 1, ∞}]The analytic result is known and can...
Asked on 08/06/2021
0 answerI have a code that generates the list with all possible Perfect Matchings (PM) of a fully connected graph. Each edge of the graph is mono or bi-colored with up...
Asked on 08/06/2021 by AlbaCL
1 answerWindows 10:$AudioInputDevices{"Focusrite USB (Focusrite USB Au", "Microphone (B525 HD Webcam)"}In windows settings I can see that the "test your microphone" line is reacting to my input through the Focusrite...
Asked on 08/06/2021
0 answerI have an 8 core CPU and want to parallel evaluate the following nested TableTable[Table[expr[i,j], {i,1,10}], {j,1,4}]But there is a problem, the time cost of evaluating expr[i,j] increases with...
Asked on 08/05/2021
2 answerI have a tuple mytup.Assume two arbitrary elements from the tuples are {a1, a2, a3, a4, a5, a6, a7, a8, a9} and {b1, b2, b3, b4, b5, b6, b7,...
Asked on 08/05/2021
1 answerConsider a system of equations$$begin{cases}frac{partial f(E,t)}{partial t}-H[T_{gamma},f(E,t)]Efrac{partial f(E,t)}{partial E} -I[f(E,t),E,T_{gamma}(t)]=0, frac{partial T_{gamma}}{partial t} + frac{3H[T_{gamma},f(E,t)](4rho_{gamma}/3 + rho_{e}+ p_{e})+int limits_{0}^{infty} dE I[f(E,t),E,T_{gamma}(t)]}{partial rho_{gamma}(T_{gamma})/partial T_{gamma} + partial rho_{e}(T_{gamma})/partial...
Asked on 08/05/2021
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