PDE problem : diffusion equation! help!

[sarahisme]

Hi all,

I am stuggling with this question ...



so far i have only tried part (a), but since i can't see how to do that so far...

ok so what to do...

do we first look at an 'associated problem' ? ... something like




lol, this stuff is all quite confusing

-Sarah

[sarahisme]

hmm ok i tryed some more and i come up with this answer:



however i don't know how to simplify it from here, i have looked up integral tables and still no luck. any suggestions guys? lol assuming the answer is right in the first place! :P

cheers
-sarah

[sarahisme]

nm, i worked it out!