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Algebra

Exponents and Logarithms

What are some examples of logarithm use?

Logarithms are used in many areas of science and engineering, especially in those areas in which quantities vary over a large range. For example, the decibel scale for the loudness of sound and the astronomical scale of stellar brightness are both logarithmic scales.

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In this example of an exponential function, when 2 is raised to the power of x, the line representing the function always lies above the x axis.



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