How do you use the Change of Base Formula and a calculator to evaluate the logarithm log_8 77?

1 Answer
Jun 12, 2018

log_8 77 approx 2.08893

Explanation:

log_a b = ln b/ln a

:. log_8 77 = ln 77/ln 8

approx 4.34381/2.079442

approx 2.08893

Check: 8^2.08893 approx 77.00