Untitled Last updated on Jan 1, 0001 1 min read R Markdown \(\sum\) \[X = \begin{bmatrix}1 & x_{1}\\ 1 & x_{2}\\ 1 & x_{3} \end{bmatrix}\] Tank (Xiao-Ning Zhang) PhD Student @ Data Miner & Coder I’m a PhD Student majoring in Bioinformatics and Biostatistics who loves computer programming such as C(++), Java, Python and R. Please enable JavaScript to view the comments powered by Disqus. comments powered by Disqus