Stumped? Need Help with PDE Problem - Sarah Needs a Hand!

[sarahisme]

hmmm i have no idea where to even start with this problem, i cannot find any examples that are similar or anything like that anywhere!

http://img147.imageshack.us/img147/2319/picture18ur9.png

anyone got an idea as to a good first step to take?

thanks

sarah :)

edit: i tryed something wild and came up with http://img470.imageshack.us/img470/7415/picture22tm5.png but i didnt use any knowlage of PDE's to work that out...hmmm... :S

 

[stunner5000pt]

hmmm i have no idea where to even start with this problem, i cannot find any examples that are similar or anything like that anywhere!

http://img147.imageshack.us/img147/2319/picture18ur9.png

anyone got an idea as to a good first step to take?

thanks

sarah :)

edit: i tryed something wild and came up with http://img470.imageshack.us/img470/7415/picture22tm5.png but i didnt use any knowlage of PDE's to work that out...hmmm... :S

how did you get your answer??

 

[sarahisme]

how did you get your answer??

i just differentiated u(x,y) with respect to x then respect to y and that gave me A(u)

but doesn't that seem to simple? i mean, there is no PDE stuff involved really... :S