Your next equation after (1) works just fine. Just continue in that vein:
Can you finish?
not going to list the BC's here.
So, I start by letting
so we have and
Now I let
so (divide by )
but I'm not too sure how correct this is because if I carry on I get
Now Im not sure how to proceed from here....I think I need to somehow add another two separation constants....but I'm not sure how to exactly...
when I try.... I might get something like
so I end up with .
Now the answer in the text book says that I should end up with the three equations
, , and
But I can't see how to get from ....(1)...to the three equations above. Can anyone please help me out?