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I am trying to find minimum of this expression:$$log _aleft(frac{4}{9} (3b-1)right)+8 log_{frac{b}{a}}^2(a)-1,$$where $ 0 < b < a < 1$. I triedClear[a, b] ...
Asked on 08/25/2021
3 answerRegionProduct[] is very useful when one intends to extrude a 2d region into 3d:s = BoundaryMeshRegion[RandomPolygon[{"Convex", 15}]];sLinExtrd = RegionProduct[s, MeshRegion[{{0}, {1}}, Line[{1, 2}]]]Output:...
Asked on 08/25/2021 by Jeff71
1 answerI have the three dimensional Laplacian $nabla^2 T(x,y,z)=0$ representing temperature distribution in a cuboid shaped wall which is exposed to two fluids flowing perpendicular to each other on either...
Asked on 08/25/2021
2 answerThe equation and boundary condition are defined in the picture where $T_1$, $T_2$, $T_3$, $k$ and $h$ are constant value. I...
Asked on 08/24/2021 by Mulang Song
2 answerRecently I am repeating a numerical discrete Fourier transform.Since this problem is related to a real experiment. So the authors use some complex functions to fit the results. Below...
Asked on 08/22/2021
1 answerHow can I join a string and a quantity and still preserved the quantity format?This what I have achieved:dataset = Dataset[{ ...
Asked on 08/22/2021 by Las Des
1 answerI do not see how to remove <annotation encoding='Mathematica' from generated MathML. Afaict it is not needed for a one way conversion and it often doubles the size of generated...
Asked on 08/22/2021
1 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 08/22/2021
4 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 08/22/2021
1 answerI'm looking for an efficient way to remove entries from a list of permutations. I have a list of variables from which I calculate all possible permutations. I then want...
Asked on 08/22/2021 by ala10
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