I am trying to solve a pair of ODE in 1D using comsol. Along with 3 drichlet boundary conditions, one of the boundary conditions is a constraint equating a function of the derivatives of u,v (dependant variables) to zero.
I get a different solution when I use ux and d(u,x) and similiarly vx and d(v,x) in the constraint. Could you please explain why this happens and what is the right symbol to use for du/dx?
But when i plot the solution d(u,x) and ux give me the same graph, then why are they behaving differently when i use it in the constraint,
I get a different solution when I use ux and d(u,x) and similiarly vx and d(v,x) in the constraint. Could you please explain why this happens and what is the right symbol to use for du/dx?
But when i plot the solution d(u,x) and ux give me the same graph, then why are they behaving differently when i use it in the constraint,