Posted by **Kelly** on Friday, June 25, 2010 at 12:57pm.

Write this expression as a single logarithm

6ln(x+8)+1/8lnx-ln(cosx)

- Logarithms -
**MathMate**, Friday, June 25, 2010 at 7:34pm
Use the product rule,

ln(a)+ln(b) = ln(ab)

ln(a)-ln(b) = ln(a/b)

Work out the problem and post your answer for a check if you wish.

- logarithms -
**MathMate**, Friday, June 25, 2010 at 7:37pm
Also, see Reiny's answer to your previous post.

http://www.jiskha.com/display.cgi?id=1277479844

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