AhmadArabiyat said:Ummmm... But we don't deal with those in IGCSE or O- Level Maths?
You can actually use differentiation for a kind of a trick for tangents, to find their gradient and draw them more accurately in graphs, kinda real complicated to understand on a forum, you need to take C1 to know it.
Our teacher gave us C1, because we finished the Syllabus last year.
Actually i was using this trick but now if this calculator cannot be used then do u know any other simple way to draw tangents accurately??