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sample2 = "this is a test to find whether pi works for other words or not as well pi pi pi potatpi pineapple pi-neapple";so sample2 is a string, and...
Asked on 10/22/2021
2 answerI would like to compute the following double integral:$$int_{-1/2}^{0}int_{-v}^{1+v} frac{2}{1-(u^2-v^2)} dudv = frac{pi^2}{12}$$When I do this using usingIntegrate[2/(1 - (u^2 - v^2)), {v, -1/2,...
Asked on 10/22/2021
3 answerTo calculate force acting on an airfoil we can use FEM with version 12 and over. Here we show an example with NACA2415. First we calculate mesh and potential flow:...
Asked on 10/22/2021
2 answerI have a list of replacements and some list they are acting on. However, some RHS of the replacements rules are identical (the LHS is not). I want to use...
Asked on 10/22/2021
4 answerIs there a way to change the coloring of the boxes that are generated by Animate or Manipulate? The color of what is gray by default.Animate[ArrayPlot[CellularAutomaton[n, {{1}, 0}, {40,...
Asked on 10/22/2021
1 answerI'm working in a finite element mesh generator. I built this function which generates an 8 node mesh (polynomials of order 2) without any interior node: ...
Asked on 10/22/2021
1 answerTossing 4 points on a circle at a time, and calculate the chance of all 4 points on the upper part of the circle. ...
Asked on 10/22/2021
2 answerI have some data :data={{1.01074, 0.964488}, {1.08552, 0.993067}, {1.07907, 1.01836}, {1.0477, 1.03695}, {1.07717, 1.07973}, {1.10243, 1.08195}, {1.12669, 1.09112}, {1.09405, 1.09319}, {1.10857, 1.08445}, {1.18604,...
Asked on 10/22/2021
4 answerWhy would that not work:L = 20;h = 1;Needs["NDSolve`FEM`"]gr = Graphics3D[Cuboid[{-h/2, 0, -h/2}, {h/2, L, h/2}]]mesh = ToElementMesh[DiscretizeGraphics[gr], "MeshOrder" -> 1](* TetGenTetrahedrize: returned error, 2 *)when with a simple...
Asked on 10/22/2021
1 answerThe following code attempts to measure the difference in months between the last day of a year and the first day of a month in the following year. QuantityMagnitude@DateDifference[{2018, 12,...
Asked on 10/22/2021
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