Latex: how to change footnote symbols

Arabic numerals, e.g., 1, 2, 3... \renewcommand{\thefootnote}{\arabic{footnote}}
Roman numerals (lowercase), e.g., i, ii, iii...\renewcommand{\thefootnote}{\roman{footnote}}
Roman numerals (uppercase), e.g., I, II, III... \renewcommand{\thefootnote}{\Roman{footnote}} Alphabetic (lowercase), e.g., a, b, c...
\renewcommand{\thefootnote}{\alph{footnote}} Alphabetic (uppercase), e.g., A, B, C...
\renewcommand{\thefootnote}{\Alph{footnote}} A sequence of nine symbols (try it and see!)
\renewcommand{\thefootnote}{\fnsymbol{footnote}}