What is meant by this notation
$\displaystyle u(x,y;\lambda)\mbox{?}$
Thanks.
Surely a family of functions $\displaystyle \{u_{\lambda}:A\subset\mathbb{R}^2\rightarrow \mathbb{R}\}$
Example:
$\displaystyle u_{\lambda}(x,y)=\lambda^2\sin (x^3y)$
Fernando Revilla
Edited: Sorry, I didn't see Danny's post.