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#1 2010-04-16 16:34:34
- lawilson8510
- Member
- Registered: 2010-04-16
- Posts: 1
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...
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#2 2010-04-16 18:44:32
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
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, there has to be a point!
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