Suppose you have two functions f(x) and g(x) and, whenever the tangent line to f(x) and the tangent line to g(x) are at the same x, those two tangent lines never cross. What can I say about f ´(x) and g´(x)?

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- Apr 29th 2006, 05:09 AMbobby77please help.
Suppose you have two functions f(x) and g(x) and, whenever the tangent line to f(x) and the tangent line to g(x) are at the same x, those two tangent lines never cross. What can I say about f ´(x) and g´(x)?

- Apr 29th 2006, 05:18 AMtopsquarkQuote:

Originally Posted by**bobby77**

-Dan