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#1 2010-04-17 14:34:34
- lawilson8510
- Novice
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open interval and tangent line... need help with proof
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...
#2 2010-04-17 16:44:32
- ZHero
- Real Member
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Re: open interval and tangent line... need help with proof
lawilson8510 wrote:
Suppose that I is ...
shouldn't it be "Suppose that I am ..."?? 
If two or more thoughts intersect with each other, then there has to be a point.