Hi 

I solve the laplace equation written in polar coordinates in annular domain.
The code run without any error 

But there is no solution displayed after running the code, note that I use Maple 18

Laplace_annulardomain.mw

Many thinks for your help

Hi

I try to solve the laplace equation with some special boundary conditions.

But, i get the follwoing error

Error, (in pdsolve/sys) the given system is not polynomial in the variables {f}

 laplace_equation.mw

Thank you for any help

I

have the following function phi(x,y) which depends on two unknown functions F1 and F2 which are differentiable.

Phi(x,y)=y sin(x y) + F1(y) + y^2 F2(x y)

Note that F1 and F2 are obtained by hand when I solve a partial differential equation

I would like to find  phi(x,y)  that satisfies phi=1 and diff(phi(x,y),y)=1-x^2*cos(x^2) on line y=x

constraint.mw

Thanks for your help

Hi,

How can find the range of  the parameter k, such that f(x)=b ( for a given b in the set of real number R) we have a unique solution of the equation f(x)=b 

Many thanks for your help

Hi,

I compute a double integral, and I would like to change the order of integration ( of course we take into account the domain of integration, that must be changed), but unfortunately I have two different values instead the same value.

order_integration.mw

Note that I the code if I put t_0=0, I get the same value. Bur for other values of t_0, i havent the same value.

Many thanks for your help