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September 15, 2014

September 15, 2014

Posted by **Anonymous** on Saturday, November 10, 2012 at 12:55am.

f'(x)=?

- Calculus -
**Steve**, Saturday, November 10, 2012 at 2:10amf = 9^x log

_{4}x

f' = ln9 9^x + 1/(x ln4)

because log_{4}x = lnx/ln4

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