What is 3 ln 3 - ln 9 expressed as a single natural logarithm?
Answer
A
ln 3
B
ln 6
C
ln 18
D
ln 27
Explanation
Use the logarithm rules: 3 ln 3 = ln(3³) = ln 27, and subtracting logarithms means taking a quotient. Thus ln 27 − ln 9 = ln(27/9) = ln 3, which is choice A.
AI-written and checked against the verified answer.