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Re: Help with differential equation

• To: mathgroup at smc.vnet.net
• Subject: [mg112264] Re: Help with differential equation
• From: Peter Pein <petsie at dordos.net>
• Date: Tue, 7 Sep 2010 02:02:01 -0400 (EDT)
• References: <i627tc$b9$1@smc.vnet.net>

Am Mon, 6 Sep 2010 08:14:36 +0000 (UTC)
schrieb mathpavi <elvisgraceland at gmail.com>:

> Dear experts,
> I tried solving  the following differential equation using DSolve:
> 
> y' ' [x]+a( y' [x] ) = b( cos[y] )
> 
> But I got error message which asked me to provide proper arguments for
> cos..
> So I changed cos[y] to cos[kx] and obtained solution...
> However, I have to solve the equation by keeping cos[y] in order to
> obtain a solution of relevance to my work.
> Please help.
> praveen
> 

combine the answers from Raul and Kevin and type:

Cos[y[x]]

Peter