Writing an expression as a single logarithmic...HELP?

  • Thread starter Thread starter R G
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R G

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I am so stuck..Writing an expression as a single logarithmic and simplify if possible. I answered the problem and sent it to my instructor to see if I am doing it right and she says there are two rules that apply: The quotient rule and the power rule...I just don't get it...Can you help? The only answer I can come up with is lnx(1/3)lny
Here is the expression:

lnx-1/3y
 
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