# Calculus

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Write this expression as a single logarithm

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

• Logarithms -

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 -

Also, see Reiny's answer to your previous post.
http://www.jiskha.com/display.cgi?id=1277479844

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