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I was trying to find the range of a function I obtained in some context. The code is as follows FunctionRange[{1/2 (1 - Sqrt[-1 + 4 Abs[x]] Sqrt[-1 +...
Asked on 12/26/2021
1 answerWhen I run the following identical numerical integralsNIntegrate[ Exp[2 I s] Exp[2 I t] ((Cos[s] - Cos[t])^2 + (Sin[s] - Sin[t])^2) + 1, {s, 0,...
Asked on 12/26/2021
2 answerAccording to the information in this post, we know that ${displaystyle z={sqrt {-2ln U_{1}}}cos(2pi U_{2})}$ follows a normal distribution, and the datas generated supports this view....
Asked on 12/26/2021
1 answerIn the simulation of stress wave propagation, I have the following two problems. First question: This question comes from page 69 of this book. The Lame equation for...
Asked on 12/24/2021
1 answerI found the documentation of wolfram appears to be written hurriedly since it seems to contain a number of unclear statements, e.g., equation numbers were often missed, texts in codes...
Asked on 12/22/2021
0 answerI would like to calculate the second order derivative of a function with respect to a matrix coefficient symbolically. Below is the first order derivative of S with respect to...
Asked on 12/21/2021
1 answerThis is my code:Show[{ParametricPlot3D[{x, y, 0}, {x, -4, 4}, {y, -4, 4}, PlotStyle -> LightGray, Mesh -> None], ParametricPlot3D[{0, 0, t}, {t, -8, 8},...
Asked on 12/19/2021
2 answerIn the documentation, I see the term form and the term pattern. For example, see Cases and MatchQ for both usages. What is the difference? And is there a reference?...
Asked on 12/19/2021
0 answerc = 5.; b = 3.; a = 2.; len = 7.5;u[t_] := Reduce[ NSolve[(2 c + a Cos[t] - b Cos[u[t]])^2 + (a...
Asked on 12/19/2021
2 answerI made this parametric plotParametricPlot[ {x1 - 0.035 x1 x2, 0.0175 x1^2 + (1. + 0.0175 x2) x2}, {x1, -b2, b2}, {x2, -a2, a2}, Frame -> False, Axes ->...
Asked on 12/19/2021
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