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    $\int_0^1 x = \displaystyle \int_0^1 x$\blank \switchtobodyfont[cambria]
    $\int_0^1 x = \displaystyle \int_0^1 x$\blank \switchtobodyfont[pagella]
    $\int_0^1 x = \displaystyle \int_0^1 x$\blank \switchtobodyfont[termes]
    $\int_0^1 x = \displaystyle \int_0^1 x$\blank

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