hi

I have this PDE:

PDE := diff(f(x, y), x, x)+diff(f(x, y), y, y) = 0

With BCs

bc := {f(0, y) = 0, f(1, y) = 0, f(x, 0) = 0, f(x, 1) = sin(Pi*x)}

which has a relatively simple exact solution.

I'm trying pdsolve and getting nowhere, either numerically or symbolically.

Any advice most welcome

thanks

PL

To install in linux do I type:

./installMapleLinux -i console

in the appropriate directory ?

 

thanks

hi

I'm dealing with an expression involving terms like:

( a * x ^ l * y ^ m * z ^ n ) + ( b * x ^ p * y ^ q * z ^ r ) + more of the same. The powers can add up to order <=8 [ for example  l + m + n can add up to 8 or less ]

How do I "ignore" terms in my expression where the powers add up to more than 4 ?  [ I know that these orders of magnitude can be ignored ]

I'm trying to use "collect" but can't see how to do this yet.

many thanks

Peter

 

I'm new to this,  sorry if the query is trivial:

I'm running OS X 10.5.7 and Maple 13. I'm finding Maple is making a mess of typesetting sum to infinity, for example. The word infinity appears written across the middle of the SIGMA summation sign.

I must be missing something simple - can anyone advise ?

 

thanks

 

P