李老师的《矩阵分析与应用》，大作业，不要照搬以免被判挂科。保存此案例以便测试程序、科研创新调用。 完成课堂上讲的关于矩阵分解的LU分解、QR分解（Gram-Schmidt）、Orthogonal Reduction (Householder变换 reduction 和Givens变换 reduction)和 URV程序实现。在此基础上 ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations for ...