Question

What is 3 ln 3 - ln 9 expressed as a single natural logarithm?

Answer 1

Hi @blacklabel can you help me?

Answer 2

http://www.chilimath.com/algebra/advanced/log/images/rules%20of%20exponents.gif <--- use rule 3 listed there
then use rule 2

Answer 3

Thank you @jdoe0001

Answer 4

yw

Answer 5

Just remember that 3ln(3) =ln(3^3)=ln(27)

Answer 6

So basically \[3 \ln 3 - \ln 9=\ ln 27-\ln 9= \ln \frac{27}{9}\]

Answer 7

Thank you @BlackLabel