Expanding a Fractional Logarithm

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Taught by mrbrianmclogan
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Lesson Summary:

In this lesson, you'll learn how to expand a fractional logarithm by changing a fraction to a negative exponent. By using the rule that 1 over x is x to the negative first power, we can rewrite a rational expression as a whole number. This allows us to simplify the expression by bringing the negative exponent in front and solving for the logarithm. With this technique, you'll be able to expand logarithms and solve for logarithmic equations more efficiently.

Lesson Description:

Expanding a log by changing a fraction to a negative exponent

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Questions answered by this video:
  • Evaluate log (1/81) base3=