03_1syntacs_tree.tex

\tree{Expr}
  \subtree{Term}
    \subtree{Term}
      \subtree{Term}
        \subtree{Fact}
          \leaf{(}

          \subtree{Expr}
            \subtree{Expr}
              \subtree{Term}
                \subtree{Fact}
                  \leaf{$x$}
                \endsubtree
              \endsubtree
            \endsubtree

            \leaf{+}

            \subtree{Term}
              \subtree{Fact}
                \leaf{$x$}
              \endsubtree
            \endsubtree
          \endsubtree

          \leaf{)}
        \endsubtree
      \endsubtree
    \endsubtree

    \leaf{$\times$}

    \subtree{Fact}
      \leaf{$x$}
    \endsubtree
  \endsubtree
\endtree