数式テスト

by <span role="math">\href{https://katex.org/}{\KaTeX}</span> ~~~math % \f is defined as f(#1) using the macro f(x) = \int_{-\infty}^\infty \hat f(\xi)\,e^{2 \pi i \xi x} \,d\xi ~~~ ~~~math \def\arraystretch{1.5} \begin{array}{c:c:c} a & b & c \\ \hline d & e & f \\ \hdashline g & h & i \end{array} ~~~ ~~~math \begin{alignedat}{2} 10&x+ &3&y = 2 \\ 3&x+&13&y = 4 \end{alignedat} ~~~ ~~~math \underbrace{a+b+c}_{\text{note}} ~~~ 文字列中に数式を入れてみる。<span role="math">x = y</span>