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It seems that Mathematica can solve an initial value problem with a DiracDelta, but not a boundary value problem with a DiracDelta. Is there a workaround? Consider for example a...
Asked on 04/25/2021
3 answerSo I have some (x,y) data from an oscilloscope. These numbers form a more or less gaussian shape. I am trying to extract the skewness of this shape, but the...
Asked on 04/25/2021
1 answerI would like to compute $ r_{ii'} = sum_{kk'} A_{ii'}^{kk'} r_{kk'} $ where all indices vary from 0 to 1 to yield a vector / matrix....
Asked on 04/25/2021
1 answerI'm creating a circular graph and want the labels to be placed on the outside of the vertices in a circular manner on the outside of the graph. I've been...
Asked on 04/24/2021 by shellhead
4 answerI take f[t_]:=Sqrt[t^2 - 1] HeavisideTheta[t - 1], apply LaplaceTransform[ t f[t], t, x], get BesselK[2, x]/x, apply InverseLaplaceTransform[ f[t], t, x]/x and get -(1/(2 x)) + x, which is...
Asked on 04/24/2021
0 answerRiemann Prime Counting Function: $$f(x)=operatorname{li}(x)-sum_rhooperatorname{li}(x^rho)-ln 2+int_x^infty frac{mathrm dt}{t(t^2-1)ln t}$$ The second correction/paring terms: $$sum_rhooperatorname{li}(x^rho)=sum_{I[rho]>0}[operatorname{Li}(x^rho)+operatorname{Li}(x^{1-rho})]$$ I tried to use Mathematica function LogIntegral to plot this second correction/paring terms, for...
Asked on 04/24/2021 by jasontower
1 answerUsing RegionWithin it's quite easy to evaluate a parametric triangle with maximal area inside the disk(constant):dreieck = Triangle[{{x1, y1}, {x2, y2}, {x3, y3}}] (*parametric triangle*)sol = NMaximize[{Area[dreieck], RegionWithin[Disk[], dreieck]},Flatten[{{x1,...
Asked on 04/24/2021
1 answerFrom Godbeer et al, Modelling proton tunnelling in the adenine–thymine base pair: ...
Asked on 04/24/2021 by Emre
2 answerWhen I try to create a ContourPlot of a continuous conditional function, Mathematica leaves a "seam" in between the two regions demarcated by the conditional. How do I fill this...
Asked on 04/24/2021
1 answerI would like to perform multiple 32bit word register additions (mod 32 add. with variables of Boolean type shuffled with symbolic type). For this task I implemented a ripple adder...
Asked on 04/24/2021 by Bogdan Sofalca
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