Dido and Aeneas in three sections, and then disperse. "The palace" Dido and Belinda enter, shocked at Aeneas’ disappearance. Dido is distraught and Belinda comforts her. Suddenly Aeneas returns, but Dido is full of fear before Aeneas speaks, and his words only serve to confirm her suspicions. She derides his reasons for leaving, and even when Aeneas says he will defy the gods and not leave Carthage, Dido rejects him for having once thought of leaving her. After Dido forces Aeneas to leave, she states that "Death must come when he is gone." The opera and Dido's life both slowly come to a
DIDO (software) DIDO (software) DIDO ( ) is a software product for solving general-purpose optimal control problems. It is widely used in academia, industry, and NASA. Hailed as a breakthrough software, DIDO is based on the pseudospectral optimal control theory of Ross and Fahroo. DIDO utilizes trademarked expressions and objects that facilitate a user to quickly formulate and solve optimal control problems. Rapidity in formulation is achieved through a set of DIDO expressions which are based on variables commonly used in optimal control theory. For example, the state, control and time variables are formatted as: The entire problem is codified using the