Units tex

Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\unit{}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\hertz{{\rm Hz}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\kelvin{{\rm K}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\metre{{\rm m}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\reciprocal[1]{{#1}^{-1}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\mega{{\rm M}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\micro{\mu}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\kilo{{\rm k}}} Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \newcommand\second{{\rm s}}} Failed to parse (unknown function "\newcommand"): {\displaystyle \newcommand\per{/}}