$\left(\begin{array}{cc}1& \pi \x9d\x9d\x86\\ \pi \x9d\x9d\x86& 1\end{array}\right)$ , where $\beta \x88\x92\pi \x9d\x9f\x8f<\pi \x9d\x9d\x86<\pi \x9d\x9f\x8f$ . Let ${\pi \x9d\x9a\xbd}_{\pi \x9d\x9d\x86}(\pi \x9d\x9f\x8e,\pi \x9d\x9f\x8e)=\pi \x9d\x91\xb7(\pi \x9d\x91\u038f\beta \x89\u20ac\pi \x9d\x9f\x8e,\pi \x9d\x92\x80\beta \x89\u20ac\pi \x9d\x9f\x8e)$ . Then what will be Kendallβs $\mathrm{{\rm O}\x84}$ coefficient between X and Y equal to?