In my example, I have to simple curves y = sqrt(x) and y = x. I would like to be able to attach a label along each curve, say at the middle of the curve. Right now, I am doing it by trial and error until it looks "right." How may I use node positioning to achieve what I have?

```
\documentclass{article}
\usepackage{tikz}
\begin{document}
    \begin{tikzpicture}[scale=2,>=latex,x=1.5cm]
        \begin{scope}
            \draw[->] (-0.2,0) -- (1.5,0) node[above left]{\footnotesize $x$};
            \draw[->] (0,-0.2) -- (0,1.5) node[below right]{\footnotesize $y$};
            \draw[-,domain=0:1,samples=250] plot (\x,{sqrt(\x)});
            \draw[-,domain=0:1,samples=250] plot (\x,{\x});
            \node at (0.35,0.75) {\footnotesize $y=\sqrt{x}$};
            \node at (0.65,0.5) {\footnotesize $y=x$};
        \end{scope}
    \end{tikzpicture}
\end{document}

```