This is a beta course, so its structure, chapters, and examples may continue to change.二次型的基本概念 This article is being translated. Please check back soon. Previous二次型理解二次型的定义、矩阵表示、标准形、正定性、合同变换等Next合同变换与标准形学习合同变换、标准形、惯性定理等概念和方法
