Use the change of base formula to evaluate log4 20.

1 answer:

5 0

Your calculator probably only evaluates in base 10 (ln is base e but we won't use that today)

so
$log_a(b)=\frac{log_c(b)}{log_c(a)}$
where c is the new base
so if you wanted in base 10
$log_4(20)=\frac{log_{10}(20)}{log_{10}(4)}$
using calculator, that is about 2.16096

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