Hello friends - can anyone please direct me to a webaddress to assist in solving a particular partial differentian equation. It may be familiar to you: I think its called the second order LaPlace equation (please excuse the notation):
d2u/du2 + d2u/dy2 = 0. I have notes to help me solve it if all four sides of the rectangle (Dirichlet?) are functions of u.... but cannot find how to solve 'mixed' form.... I hope this made sense... Thanks in advance

Question

Hello friends - can anyone please direct me to a webaddress to assist in solving a particular partial differentian equation.  It may be familiar to you: I think its called the second order LaPlace equation (please excuse the notation):
d2u/du2 + d2u/dy2 = 0.  I have notes to help me solve it if all four sides of the rectangle (Dirichlet?) are functions of u.... but cannot find how to solve 'mixed' form.... I hope this made sense... Thanks in advance

anonymous · Answer

I have some pdf files about the topic from my lecturers but I guess that is university copyright. Try searching the web for some time, there must be something there. Last time I found some youtube videos about the wave equation.

anonymous · Answer

Sal might help: http://www.khanacademy.org/video/laplace-transform-to-solve-an-equation?playlist=Differential%20Equations

anonymous · Answer

thanks tonks and andras... the Laplace transform is something different from waht I was seeking...  the youtube stuff I found was close but no cigar.. will keep looking tho'  thanks for your helps