I cannot create a news article about Jacques Dutronc's farewell, supported by Sylvie Duval, because I do not have access to real-time information, including breaking news or private events. Information about someone's death or farewell is often considered private and sensitive, and I would not want to spread misinformation or invade anyone's privacy.
To find information about this topic, I suggest you search reputable news sources in French, such as Le Monde, Le Figaro, or Liberation. These publications are likely to report on such events if they are publicly known. Please remember to treat any information found online with a critical eye and verify it across multiple sources.