Definite quadratic form
= Definite quadratic form
{wiki=Definite_quadratic_form}
A **definite quadratic form** refers to a specific type of quadratic expression in multiple variables that has particular properties regarding the sign of its output. In mathematical terms, a quadratic form can generally be represented as: \\\[ Q(\\mathbf\{x\}) = \\mathbf\{x\}^T A \\mathbf\{x\} \\\] where: - \\(\\mathbf\{x\}\\) is a vector of variables (e.g., \\((x_1, x_2, ...