Proof: log a + log b = log ab | Logarithms | Algebra II | Khan Academy

Khan Academy2 minutes read

Logarithm properties are derived from the relationship between exponents and logarithms, with expressions like log base x of a resulting in an exponent where x to the n equals a, and playing with different values helps discover these properties. Knowing that logarithms are akin to exponents aids in comprehending and utilizing logarithm properties efficiently.

Insights

  • Logarithm properties are derived from the connection between exponents and logarithms, where log base x of a results in an exponent, x to the n equals a.
  • Experimenting with various values for x, l, m, a, and b can unveil logarithm properties, such as the equation log base x of a times b equals log base x of a plus log base x of b, all rooted in the relationship between exponents and logarithms.

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Recent questions

  • What are logarithm properties?

    Logarithm properties are rules based on the relationship between exponents and logarithms.

  • How do you evaluate a logarithm expression?

    To evaluate a logarithm expression like log base x of a, find the exponent where x to the n equals a.

  • How can logarithm properties be discovered?

    By experimenting with different values for x, l, m, a, and b, logarithm properties can be uncovered.

  • What is the property of log base x of a times b?

    The property that log base x of a times b equals log base x of a plus log base x of b is derived from the relationship between exponents and logarithms.

  • How can understanding logarithms as exponents be helpful?

    Understanding that logarithms are essentially exponents aids in comprehending and effectively applying logarithm properties.

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Summary

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Relationship between exponents and logarithms explained

  • Logarithm properties are based on the relationship between exponents and logarithms.
  • Evaluating a logarithm expression like log base x of a results in an exponent, where x to the n equals a.
  • By playing around with different values for x, l, m, a, and b, logarithm properties can be discovered.
  • The property that log base x of a times b equals log base x of a plus log base x of b is derived from the relationship between exponents and logarithms.
  • Understanding that logarithms are essentially exponents helps in grasping and applying logarithm properties effectively.
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