Hello World Posted on 2018-08-05 Edited on 2022-07-29 Disqus: Symbols count in article: 543 Reading time ≈ 1 mins. Tests Latex test Inline test . Misplaced & \\begin{bmatrix} x\_{11} & x\_{12} & x\_{13} & \\dots & x\_{1n} \\\\ x\_{21} & x\_{22} & x\_{23} & \\dots & x\_{2n} \\\\ \\dots & \\dots & \\dots & \\ddots & \\vdots \\\\ x\_{d1} & x\_{d2} & x\_{d3} & \\dots & x\_{dn} \\end{bmatrix} = \\begin{bmatrix} x\_{11} & x\_{12} & x\_{13} & \dots & x\_{1n} \\\\ x\_{21} & x\_{22} & x\_{23} & \dots & x\_{2n} \\\\ \vdots & \vdots & \vdots & \ddots & \vdots \\\\ x\_{d1} & x\_{d2} & x\_{d3} & \dots & x\_{dn} \\end{bmatrix}