- #1
ADGigus
- 3
- 0
Hi everybody,
How do I solve this differential equation ??:
y'' = a(Exp(-b*y)-1) ;
where a, b are constants
with the boundaries conditions :
y'(x=0)=-K1
y'(x=L)=0
without the constant term I can do
y''*y' = y' a Exp(-b y)
then integrate it
[tex]\ {1/2} (y')^2= {a/b} ~Exp(-b y)[/tex]
and so on and finaly find something in hyperbolic function Tanh()...
but With the constant term " -a " on the right side, I don't know how to start.
Thank very much for your help
How do I solve this differential equation ??:
y'' = a(Exp(-b*y)-1) ;
where a, b are constants
with the boundaries conditions :
y'(x=0)=-K1
y'(x=L)=0
without the constant term I can do
y''*y' = y' a Exp(-b y)
then integrate it
[tex]\ {1/2} (y')^2= {a/b} ~Exp(-b y)[/tex]
and so on and finaly find something in hyperbolic function Tanh()...
but With the constant term " -a " on the right side, I don't know how to start.
Thank very much for your help