Full Definition of DRAGONFLY. : any of a suborder (Anisoptera) of odonate insects that are larger and stouter than damselflies, hold the wings horizontal in repose, and have rectal gills during the naiad stage; broadly: odonate.See dragonfly defined for English-language learners.See dragonfly defined for kids. any of a suborder (Anisoptera) of odonate insects that are larger and stouter than damselflies, hold the wings horizontal in repose, and have rectal gills during the naiad stage; broadly: odonate. See dragonfly defined for English-language learners. See dragonfly defined for kids.
The value of this constant is positive 1.7976931348623157E+308. The result of an operation that exceeds Double.MaxValue is Double.PositiveInfinity. In the following example, Double.PositiveInfinity results from addition, multiplication, and exponentiation operations when the result exceeds Double.MaxValue.
1 Although the first derivative (3 x 2) is 0 at x = 0, this is an inflection point. 2  The function has a unique global maximum at x = e. ( 3 See figure at right). 4  The function x-x has a unique global maximum over the positive real numbers at x = 1/ e.