化实二次型为标准形的一种特殊方法

A Special Method of Changing the Guad ratic into the Standard

本文介绍一种特殊方法,连续用第三种初等行变换,能够快速将二次型化为标准形,同时求出非异矩阵P。

This paper introduce s a special method of changing the guadratic into th e standard and obtaining th e matrix P by continously using the third type elementary matrix．