@mashable It's a simple derivate. Max and Min. This students really don't think.
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@mashable it's 'maths' here, not 'math'Thanks. Twitter will use this to make your timeline better. UndoUndo
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@mashable I don't even understand what they're asking for. LolThanks. Twitter will use this to make your timeline better. UndoUndo
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@mashable Junior high school problem (ages 12-14) here in Greece.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@mashable: 2015 new Higher Mathematics paper 2 no. 8 https://youtube.com/watch?v=xko48OoTAQU …#SavedYouAClickThanks. Twitter will use this to make your timeline better. UndoUndo
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