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   impossibility of equality along finite interval
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   Author  Topic: impossibility of equality along finite interval  (Read 8383 times)
jarls
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impossibility of equality along finite interval  
« on: Nov 7th, 2009, 9:06pm »
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Prove that no two distinct closed-form functions can be equal to one another along a non-zero finite interval.
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Obob
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Re: impossibility of equality along finite interva  
« Reply #1 on: Nov 7th, 2009, 10:01pm »
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Here's the key ingredient:
 
http://en.wikipedia.org/wiki/Identity_theorem
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