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Mathematics
David Lingard's user avatar
David Lingard's user avatar
David Lingard's user avatar
David Lingard
  • Member for 6 years, 6 months
  • Last seen more than a month ago
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Top posts
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answer
9
What does it mean to integrate a complex function over a real domain?
Aug 20, 2019
question
8
Weak derivative under the integral sign
Aug 5, 2019
question
6
Limit $\lim\limits_{x\to\infty}\int\limits_0^\pi\cos\left(x\sin\theta \right)d\theta=0$
Dec 2, 2019
question
4
Roots of $f(x)=x^3-x^2-2x+1$
Feb 26, 2018
question
4
Steady states of $u_t= u_{xx}+\pi^2u$
Aug 14, 2019
question
3
Why does the ODE $xy''+y'+xy=0$ require only one initial condition?
Dec 25, 2020
question
3
$\displaystyle \sup_{t\in \mathbb{R}}\left(\sin(\sqrt 2 \ t)+\sin(t)\right)=2$
Feb 17, 2020
question
3
Nonnegativity of solution of $u_t=\Delta u+u$
Jul 31, 2019
answer
3
What is the motivation of defining weak derivative as it is?
Aug 7, 2019
answer
2
Why does the sum of the reciprocals of factorials converge to $e$?
Nov 22, 2021
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8
Time dependent delay differential equation
5
Exponential decay of solution in $L^p$ with $p>2$