To create larger integral symbols in LaTeX, the discussion highlights that using inline math mode results in smaller symbols. To achieve a bigger integral, switch to displayed math mode, which enlarges the symbol. Users can also utilize commands like \left/\right or \bigl/\bigr to increase the size of delimiters. However, for significantly larger integral symbols, specific packages like those found on CTAN are necessary, as the basic LaTeX available on some platforms may have limitations. Additionally, various size commands such as \Large, \LARGE, and \Huge can be applied to integrals to emphasize them further.