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- Mar 27th 2009, 01:18 PM #1

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- Mar 27th 2009, 01:24 PM #2

- Mar 27th 2009, 01:27 PM #3

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- Mar 28th 2009, 09:56 AM #4

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A basic property of

**logs**leads to the conclusion that, for any base "b", the following holds:

. . . . .

Applying a**log rule**inside that power to put that -9 back inside the log, we get a power of:

. . . . .

...by the**rule for negative exponents**.

Now apply the first rule above to simply the exponential expression.