FiniteElement method cannot handle $\frac \partial^2 u \partial x \partial y =1$ well?
NIntegrate doesn't calculate a triple integral
Dynamic movement of a circle and resulting ratio of intersecting areas
Map or Thread operation for list
From exponent of sum to product of exponents
How can I numerically solve this trigonometric equation?
Interpretation + Information leads to infinite recursion
FiniteElement method cannot handle $\frac \partial^2 u \partial x \partial y =1$ well?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=309065
Consider this toy example: $$\newcommand{\p}{\partial}\newcommand{\f}{\frac} \left\{\begin{array}{l}\f{\p^2 u}{\p x \p y}=1\\ \left.u\right|_{x=0}=0\\ \left.u\right|_{y=0}=0\end{array}\right.$$ ... [differential-equations] [finite-element-method]
asked by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 Score of 12 answered by Alex Trounev https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=58388
Score of 8 NIntegrate doesn't calculate a triple integral https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=309130
I have an integral of dubious origin, which I don't know how to calculate: ... [calculus-and-analysis] [numerical-integration]
asked by Monster https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80016 Score of
5 answered by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152
Score of 3 Dynamic movement of a circle and resulting ratio of intersecting areas
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=309027
We have 3 circles. The middle one has to move along the line y=-x towards the top left such that the resulting area of the respective intersecting regions become 4:1 I have below thus far to just ... [graphics] [area]
asked by Steve237 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=69429 Score
of 5 answered by ydd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72953
Score of 6 Map or Thread operation for list https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=308960
I have data such as ... [list-manipulation]
asked by rani https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89293 Score of 5 answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999
Score of 6 From exponent of sum to product of exponents https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=308986
Good day I have an expression Exp[m I (a (Exp[-I x] + Exp[+I x]) + b (Exp[-3 I x] + Exp[+3 I x]))] I want to convince Mathematica to expand the exponent, ... [simplifying-expressions] [expression-manipulation]
asked by Boudewijn Verhaar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=88975
Score of 5 answered by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81335
Score of 5 How can I numerically solve this trigonometric equation? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=309117
I have tried to use the following. NSolve[Cos[Pi/2*Cos[\[Theta]]]/Sin[\[Theta]] == 1/Sqrt[2], \[Theta]] However, I have this error. NSolve::nsmet: This system ... [equation-solving]
asked by kile https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=65814 Score of 4 answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999
Score of 5 Interpretation + Information leads to infinite recursion https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=309126
It looks like a bug, or am I using Interpretation incorrectly? Any workaround? Example First, we give the following definition so that ... [formatting] [front-end] [boxes]
asked by Lacia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86893
Score of 4