[Solved] Solve the initial-value problem. Drug Addiction: A chronic disorder characterized by the compulsive use of drugs, leading to severe physical or psychological dependence. Bulimia: An eating disorder characterized by episodes of binge eating followed by behaviors to avoid weight gain, such as vomiting. Cycles of Abstention: refer to periods during which an individual consciously chooses to refrain from engaging in certain behaviors or consuming specific substances, often used in the context of addiction recovery. Sexual Behavior: Actions or practices related to the expression of sexuality, including but not limited to sexual intercourse, masturbation, and erotic play.