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I am playing around with Simplify amd assumptions. I noticed that:Simplify[x > (a + b)/e, x < (a + b)/e]FalseBut if I add more variables to the numerator,...
Asked on 10/02/2021 by user74005
1 answerMathematica provides the following function to compute the arctangent of a number, preserving quadrant information:ArcTan[x,y]for real $x$ and $y$, when $y = 0$ and $x ne 0$, $arctan(y/x) =...
Asked on 10/02/2021 by Billy Kalfus
3 answerI'm working on a general procedure where I need to obtain the eigen-decomposition of a matrix. I noticed the following funny difference, though. When I useA = {{0, 0,...
Asked on 10/02/2021
0 answerI have seen something similar asked in this question, but wasn't able to adapt it. I've been using Jens's code for scaled inset graphics:stretchText[char_, pos_, scale_, angle_:...
Asked on 10/02/2021
1 answerIt is known that $E$ is a third-order identity matrix and $A$ is a third-order real symmetric matrix. Matrix $A$ satisfies the condition of $A^{2}+A=2...
Asked on 10/01/2021
2 answerHow can I plot these kinds of figures, with Mathematica? The data is: ...
Asked on 10/01/2021
2 answerI'm new to mathematica and I need to get the equations for the set of planes which are part of a convex hull that I have calculated using ConvexHullMesh. It...
Asked on 10/01/2021 by Samvid Mistry
2 answerI'd like to plot the graph of the direction field for a differential equation, to get a feel for it. I'm a novice, right now, when it comes to...
Asked on 10/01/2021 by Matt Groff
7 answerI obtain a raw input form of:(1.*(43.013537902165325 + 43.013537902165346*E^(0.003288590604026849*t))^2)/ (3700.328885722024 + 5.4569682106375694*^-12*E^(0.003288590604026849*t) + 3700.328885722026*E^(0.006577181208053698*t))This is just one of the large lists of expression....
Asked on 09/30/2021 by Ka-Wa Yip
3 answerI am trying to perform a numerical integration on a function defined through a sum of exponential terms. The summation is given by:sum[z_, z0_, t_, nmax_] := 1/Sqrt[4...
Asked on 09/30/2021
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