Since , we have . Similarily . Now you probably know that if , and then . What do you conclude?

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- Apr 15th 2010, 08:59 PM #1

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- Apr 15th 2010, 09:19 PM #2

- Apr 15th 2010, 09:26 PM #3

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- Apr 15th 2010, 10:02 PM #4

- Apr 15th 2010, 10:08 PM #5

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- Apr 16th 2010, 09:27 AM #6