Expanding a Log with a Rational Root

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Taught by mrbrianmclogan
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Lesson Summary:

In this lesson, we learn how to expand a logarithm with a rational root using both roots and negative exponents. The teacher starts by changing the roots to exponents before showing how to move the denominator to the numerator with the opposite sign. After simplifying the expression, the teacher explains that ln of E is equal to 1 and how to use that knowledge to solve the problem. Students can use either ln rules or a shortcut rule to solve this type of problem.

Lesson Description:

Expanding a logarithm with a rational root

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Questions answered by this video:
  • ln ( 1/e⅓ )=