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1) We have one point of the function.

2) We know one point of its derivative. This means we know 2 more points of the function (one step in either direction).

3) We know one point of its second derivative. This means we know 2 more points of the derivative, which in turn gives us 2 more points of the function.

etc.

Or at least, that's the impression I get from this thread, since I wasn't familiar with the series before that.




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