[EIdentifier "f",ESymbol Open "(",EIdentifier "x",ESymbol Close ")",ESymbol Rel "=",EDelimited "{" "" [EArray [] [[[ENumber "1"],[ESymbol Bin "\8722",ENumber "1",ESymbol Rel "\8804",EIdentifier "x",ESymbol Rel "<",ENumber "0"]],[[EBinary "\\frac" (EGrouped [ENumber "1"]) (EGrouped [ENumber "2"])],[EIdentifier "x",ESymbol Rel "=",ENumber "0"]],[[ENumber "1",ESymbol Bin "\8722",ESuper (EIdentifier "x") (ENumber "2")],[EText TextNormal "otherwise"]]]]]