<<< tex u'' + p(x)u' + q(x)u=f(x),\quad x>a >>> native [ ESuper (EIdentifier "u") (ESymbol Pun "\8243") , ESymbol Bin "+" , EIdentifier "p" , ESymbol Open "(" , EIdentifier "x" , ESymbol Close ")" , ESuper (EIdentifier "u") (ESymbol Pun "\8242") , ESymbol Bin "+" , EIdentifier "q" , ESymbol Open "(" , EIdentifier "x" , ESymbol Close ")" , EIdentifier "u" , ESymbol Rel "=" , EIdentifier "f" , ESymbol Open "(" , EIdentifier "x" , ESymbol Close ")" , ESymbol Pun "," , ESpace (1 % 1) , EIdentifier "x" , ESymbol Rel ">" , EIdentifier "a" ]