plate partial differential equation
53624
2D inhomogeneous biharmonic equation with wedged edge
39995
Showing that partial derivatives of $f(x) = \frac{xy}{x^2+y^2}$ exist for $(x,y) \neq (0,0)$
95774
$\frac{\partial^2 u}{\partial t^2}-c^2\frac{\partial^2u}{\partial x^2}=0\text{ implies } \frac{\partial^2 u}{\partial z \partial y}=0$
157624
How to force the function to take positive value when solving PDE by NDSolve
137349
Solving Wave Equation with Initial Values
41666
How to solve a system of PDEs with zip condition?
140666
Solving the Quasilinear PDE $u_{t} - u^2 u_{x} = 0$ with piecewise initial condition.
36574
Does separation of variables in PDEs give a general solution?
56429
Extension of partial derivatives and the definition of $C^k(\overline{\Omega})$
68531
Differential equation problem. Integrating the logistic equation.
47168
PDE separation of variables
91359
Are these mixed partial derivatives equal?
144387
solve three coupled linear partial differential equations with space and time variables using NDSolve
149879
Sketching base characteristics of first order pde
4199
Evans PDE Problem 5.15: Poincaré inequality for functions with large zero set
69945
A PDE exercise from Gilbarg Trudinger. problem 2.2
131786
Why are second order linear PDEs classified as either elliptic, hyperbolic or parabolic?