texが使えるらしい

[tex:\cal{F}(X,Y) = \int_{-\infty}^\infty f(x,y)
\exp\{-j(X\cdot x + Y \cdot y)\} \mathrm{d}x\mathrm{d}y]

¥cal{F}(X,Y) = ¥int_{-¥infty}^¥infty f(x,y)¥exp¥{-j(X¥cdot x + Y ¥cdot y)¥} ¥mathrm{d}x¥mathrm{d}y

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