yes they are still in the syllabus i quote: "Applications of differentiation to maxima and minima and stationary points, increasing and decreasing functions.....To include applications to curve sketching. Maxima and minima problems may be set in the context of a practical problem." -- look at P2 June 2021 Q9... I just randomly looked at any paper and the first paper i looked at was this and found such a question...ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1l9b-K09iIE.html