ABSTRACT
Let x (n × 1) be a random vector and A (n × n) be a symmetric matrix. The quadratic form in x associated with A is defined as () s = x ′ A x . https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9780203749289/79377866-4f0a-4e7a-8499-baef30d4324c/content/eq2026.tif"/>
