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**lawilson8510****Member**- Registered: 2010-04-16
- Posts: 1

Suppose that I is an open interval and that f "(x) is greater than or equal to 0 for all x in I. If b is in I, then show that the part of the graph of f on I is never below the tangent line to the graph at (b, f(b)).

prove this...

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**ZHero****Real Member**- Registered: 2008-06-08
- Posts: 1,889

lawilson8510 wrote:

Suppose that I

is...

shouldn't it be "Suppose that I **am** ..."??

If two or more thoughts intersect, there has to be a point!

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