what is K$

*To*: mathgroup at smc.vnet.net*Subject*: [mg66473] what is K$*From*: "na" <na at na.na.com>*Date*: Mon, 15 May 2006 23:48:52 -0400 (EDT)*Reply-to*: "na" <na at na.na.com>*Sender*: owner-wri-mathgroup at wolfram.com

Sometimes, when I try to evaluate something I get a K$ followed by some number, what is this K$ ? I Searched entire online help and wolfram website and I couldn't find anything on this K$. Here is an example: In[5]:= DSolve[Derivative[1][f][x]* Derivative[1][g][x] == D[f[x]*g[x], x], f[x], x] Out[5]= {{f[x] -> E^Integrate[ -(Derivative[1][g][ K$74]/(g[K$74] - Derivative[1][g][ K$74])), {K$74, 1, x}]*C[1]}}