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Exponential and Loarithmic Functions : Earthquake Intensity

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Find the intensity I of an earthquake measuring R on the Richter scale (let Io=1).

(a) Chile in 1906, R=8.6
(b) Los Angeles in 1971, R=6.7

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Solution Summary

Earthquake intensity is calculated using a logarithmic function. The Richter scale is analyzed.

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We have:


Because I0=1, we can say ...

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