Simple 1st order PDE
25730
Solve $u_x + u_y + u = e^{x+2y}$
4989
Why are there only derivatives to the first order in the Lagrangian?
99532
Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
147937
Second-order non-linear ODE
40960
Implicit Differentiation
144387
solve three coupled linear partial differential equations with space and time variables using NDSolve
152472
How to get solutions in elementary functions to the following non-linear ODE
115033
Find the solution of the pde $xu_y-yu_x=u$.
118462
How to solve this first-order differential equation?
131786
Why are second order linear PDEs classified as either elliptic, hyperbolic or parabolic?
86244
Finding NDSolve method details
89185
The notation for partial derivatives
50851
Good 1st PDE book for self study
101112
Transport equation $u_t + xu_x + u = 0$ with $u(x_0, 0) = \cos(x_0)$
93848
Proving energy conservation for wave equation
8844
Higher-order partial derivatives w.r.t. variable raised to some power
84385
Implicit differentiation