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[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

And then there are the instructors of mathematics guarding every degree. Hehe.

How about defining continuity first ? There are at least five equivalent definitions that come to mind. Just give me one.

And when we are already on topic why exactly isn't continuity and differentiability the same thing ? An example is enough.