How to solve 12^r=13 in solving exponential equation with logarithms

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asked Oct 21, 2015 80.3k views

4 votes

How to solve 12^r=13 in solving exponential equation with logarithms

Mathematics
high-school

OmarAguinaga asked

by OmarAguinaga

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2 Answers

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$12^r=13\\ r=\log_(12)13$

Sincere answered Oct 23, 2015

by Sincere

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3 votes

12^r = 13

Take the logarithm of each side of the equation:

r log(12) = log(13)

Divide each side by log(12) :

r = log(13) / log(12) = 1.03221,,, (rounded)

Noh answered Oct 25, 2015

by Noh

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