2 A sm mary \(\mathbf { 6 }\) th sp esl, \(x \mathrm { k }\) lm etres \(\boldsymbol { \rho } \mathbf { r b }\), \(\mathbf { 0 } 2\) cars \(\boldsymbol { \rho }\) ssig a certain \(\dot { \mathrm { p } } \mathrm { ng }\) th fb low ig if o matin $$\Sigma ( x \oplus ) = 3 \mathrm { a } \quad \mathrm {~d} \quad \Sigma ( x \oplus ) ^ { 2 } = \mathbb { t }$$ Fid b riance 6 th sp ed ad \(n\) e fid b vale \(6 \Sigma x ^ { 2 }\). [4]