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08-05-2017
Mathematics

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3ln3-ln9 in single logarithmic form

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08-05-2017

remember
aln(c)=ln(c^a)
and
ln(a)-ln(b)=ln(a/b)

so

3ln3-ln9=
ln(3^3)-ln9=
ln27-ln9=
ln(27/9)=
ln3

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