ln81=
To solve the problem, follow these steps:
- Step 1: Identify the expression to simplify, ln81.
- Step 2: Apply the change of base formula:
Using the change of base formula, we have:
log8e=ln8lne
Since lne=1, substituting gives:
log8e=ln81
Therefore, the expression ln81 can be rewritten as log8e.
Thus, the correct choice is log8e.