SOLUTION: log3 81=

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Question 186125: log3 81=
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
log3 81=
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since 3^4 = 81,
log%283%2C81%29+=+4
If you don't know that 3^4 = 81 (some don't), then
log%283%2C18%29 = log(81)/log(3), or
log%283%2C18%29 = ln(81)/ln(3)