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# PDE's constant problem Watch

1. Hey guys,

So I'm currently finishing off PDE's and I'm at this question:

I've been able to get a general solution of:

Now I've been able to get the use the first two conditions to get a more specific solution:

Now I'm at the next condition:

And I'm assuming it's to do with the constant at the beginning of the coshy, but I'm not sure how to progress before I perform the fourier series

Thanks for reading And apologises for typos
2. Are you sure your solution you've got so far is correct, because there isn't an term in the series at all.
3. (Original post by Noble.)
Are you sure your solution you've got so far is correct, because there isn't an term in the series at all.
Apologises, copying error
4. (Original post by cpdavis)
Apologises, copying error
No problem. What is it you're struggling to get with the third condition? Am I simplifying the problem a bit too much, what do you get what you partially differentiate w.r.t y, then set y=0 and add on your specific solution with y=0? Does that get you nowhere?
5. (Original post by Noble.)
No problem. What is it you're struggling to get with the third condition? Am I simplifying the problem a bit too much, what do you get what you partially differentiate w.r.t y, then set y=0 and add on your specific solution with y=0? Does that get you nowhere?
Oh **** of course

forgot to put in y=0

Okay, now I have: My gut instinct is to set either D or C to 1, but I can't think of a valid reason

This question is so tedious

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Updated: April 6, 2013
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