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Topic:
Question on derivatives
Replies:
6
Last Post:
Oct 21, 2013 8:44 PM




Re: Question on derivatives
Posted:
Oct 17, 2013 6:39 AM


Peter Percival wrote:
> Excuse me sir, what does it mean for a graph to be horizontal (or > vertical) at a point?
It means the tangent at the point is horizontal or vertical.  Timothy Murphy email: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland



