Formula_12805

\[\begin{gathered}\left\langle c_{1} a_{1}(p, q, \vec{x}, t)+c_{2} a_{2}(p, q, \vec{x}, t)\right\rangle=, \\=c_{1}\left\langle a_{1}(p, q, \vec{x}, t)\right\rangle+c_{2}\left\langle a_{2}(p, q, \vec{x}, t)\right\rangle, \\\langle c\rangle=c,\end{gathered}\]