Let y = y(x) be a solution of the differential equation (xcos x)dy + (xysinx + ycos x – l)dx = 0, 0<x<\frac{\pi}{2} \text {. If } \frac{\pi}{3} y\left(\frac{\pi}{3}\right)=\sqrt{3} \text {, then }\left|\frac{\pi}{6} y^{\prime \prime}\left(\frac{\pi}{6}\right)+2 y^{\prime}\left(\frac{\pi}{6}\right)\right| \text { is equal to }