#### integral

• General syntax for symbols with a kind of lower and upper limits:

\symbolname_{lowerexpression}^{upperexpression}

• In general, there are two ways how these lower and upper expressions can be placed: centered below and above the symbol or in a subscript / superscript manner. In the first case the symbol name is preceded by the word "big", in the second there is no prefix.
• Syntax for integral symbol:

$$\bigint_{0}^{\infty}gives \bigint_{0}^{\infty} and \int_{0}^{\infty}  gives $\int_{0}^{\infty}$ • Use font size commands for a nicer picture:$$\LARGE\bigint_{\small0}^{\small\infty}gives

\LARGE\bigint_{\small0}^{\small\infty}

and

\large\int_{\small0}^{\small\infty}

\$   gives

$\large\int_{\small0}^{\small\infty}$