Bing found the following results
朗伯W函數 - 維基百科,自由的百科全書
Proof that $Cov(aX+b, Y+Z)=aCov(X,Y)+aCov(X,Z)$
【Tani Yuuki】W/X/Y【中、日、羅歌詞】 - tsukilsao319的創作
Machine Learning: Why xW+b instead of Wx+b? - Stack Overflow
Euler Equations - University of Alabama in Huntsville
4.5 Covariance and Correlation - 國立臺灣大學
Chapter 4 Variances and covariances - Yale University
differential equation solver - Wolfram|Alpha
Linear Transformation Between Vector Spaces - Problems in …
Vector Space and Linear Transform - National Tsing Hua University