% \f is defined as #1f(#2) using the macro \f\relax{x} = \int_{-\infty}^\infty \f\hat\xi\,e^{2 \pi i \xi x} \,d\xi f(x)=∫−∞∞f^(ξ) e2πiξx dξ% \f is defined as #1f(#2) using the macro \f\relax{x} = \int_{-\infty}^\infty \f\hat\xi\,e^{2 \pi i \xi x} \,d\xif(x)=∫−∞∞f^(ξ)e2πiξxdξ Fast: KaTeX renders its math synchronously and doesn’t need to reflow the page. Print quality: KaTeX’s layout is based on