Use the Boundedness Theorem to Determine Whether the Statement Is $f ( x ) = x ^ { 5 } - 5 x ^ { 3 } + 4 x$

True/False

Use the boundedness theorem to determine whether the statement is true or false.
-The polynomial $f ( x ) = x ^ { 5 } - 5 x ^ { 3 } + 4 x$ has no real zero greater than 2 .