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Linear Instability Analysis
Hello Everyone,May I ask you about this "Error, (in pdsolve/numeric/process_PDEs) number of dependent variables and number of PDE must be the same". Does anyone have idea about solving linear...
View Articlepdsolve-numeric error
I am trying to solve a PDE using pdsolve-numeric. I am getting an error related to boundary conditions.Please see the follwing worksheet and suggest me some solutionspdsolve.mw
View ArticlePlease help me to solve this PDE (I am getting an error)
Hello everybody!Please help me to solve the attached partial differential equation. I am getting an error. I do have its analytical solution and that works fine.The error is as followsError, (in...
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how pdsolve time-fractional equation in maple?
hi...how i can pdsolve this equation numerically or analyticlly?this equation is time-fractional equation with generalized Cattaneo modelwhere is the fractional derivative operator considered in...
View Article2D Boundary conditions in maple
Please, I need assistance with this problem.Here is the problem I am trying to solve:restart:with(plots):with(LinearAlgebra): with(PDEtools):with(Student):myPDE1 := D11*diff(w(x,y), x$4) +...
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how i can pdsolve this equation?
hiplease help to me for solve this equation via pdsolve?thanksdsove2.mw > > > (1)> > > > > > Download dsove2.mw
View Articlepdsolve->Warning: System is inconsistent --- Can I see where is the problem?
Hello, I have a PDE system. When I use pdsolve it gets me the messege " pdsolve->Warning: System is inconsistent". Is there a way I can see which equations breaks the system down? For this system,...
View ArticleProblems with Solving PDE with solution of ODE as boundary layer condition.
I have a system of pde as follow,PDE := [(x*y+1)*(diff(f(x, y), y, y, y))+(x+(3/4)*f(x, y))*(diff(f(x, y), y, y))-(1/2)*(diff(f(x, y), y))^2+T(x, y) = (1/4)*x*(diff(f(x, y), y))*(diff(diff(f(x, y), y),...
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Want for execution
Can somebody of Maple users execute the following commandrestart; pdsolve({diff(w(x, y, z), x)+diff(w(x, y, z), y, y)+2*(diff(v(x, y, z), x)-(diff(u(x, y, z), y))-2*w(x, y, z)) = diff(w(x, y, z), z,...
View ArticleProblem with "pdsolve" function
Hi all. I'm using pdsolve to find linearly independent solutions for two partial differentioal equations. I can solve them seperatly by "pdsolve", but when I try to solve them at the same time to get...
View ArticleJaggered graph for fdiff function
For my fdiff graph, it seems that the cirtical points appear to be jaggered or not smooth. Anyone nows what seem to be the problem? i tried increasing the numpoints but it did not work:( I am open to...
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How solve this PDE
Hello everybody, I want to solve this pde.the desire solution is V(r,z). three boundar conditions are written that two of them are related to rhe radial and one is related to the longitudinal...
View ArticleHow to obtain the derivative value of a function obtained as a solution using...
I have the following code in Maple 13:SYS := {diff(T(x, t), t) = diff(T(x, t), x, x)}; IBC := {T(1, t) = 0, T(x, 0) = 1, (D[1](T))(0, t) = -exp(t)}; SOL := pdsolve(SYS, IBC, numeric, time = t, timestep...
View ArticleSolve PDE by pdsolve, how to interpret answer?
Hi! Tried to solve the PDE below (q and p are time-dependent variabels, q(t),p(t)): pde := diff(rho(t, q, p), t) = -(diff(rho(t, q, p), q))*p+(diff(rho(t, q, p), p))*(2*q+2); pdsolve(pde, rho(t, q,...
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Differential Equation
How can I find the numeric value of this PDE: WhereI want the numeric values i.e theta(2,2) , theta (1,3) and the likes.
View ArticleSolving a set of PDEs
Hi all. I need to solve a large number of PDEs (partial differential equations) symbolically and simultaneously, to find the linearly independant answers for all of them, I useans :=...
View ArticleHow do I get values out of the result of pdsolve for a system of partiel...
Hello all I am new to Maple, and I am solving a system of two coupled partial differential equations using pdsolve, but I am having a hard time retrieving the solution evaluated at some point from the...
View ArticleHow do I solve a partial differential equation with pdsolve, when the...
Hi all, I have a partial differential equation similar to the following:Equation: f_x(x,y) + f_y(x,y) = f(x,y) + f(x,0),Boundary value conditions: f(x,10) = f(10,y) = 0.The solution is that f is...
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how i can save results on text file from pdsolve?
how i can save results on text file from pdsolve? thanksmaple11.mw (1)(2) (3) (4) Error, (in fprintf) file or directory does not exist Download maple11.mw
View ArticleSolving a non linear system of PDE
I want to solve the following non linear PDESS := [diff(u(x, y, t), t)-0.625e-1*(diff(u(x, y, t), x, x)+diff(u(x, y, t), y, y))-6*(diff(u(x, y, t)*(diff(v(x, y, t), x)), x)+diff(u(x, y, t)*(diff(v(x,...
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