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Learning Goal

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Understand inverse relationship of exponents and logarithms

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HSF.BF.B.5

**HSF.BF.B.5**: (+) Understand the inverse relationship between exponents and logarithms and use this relationship to solve problems involving logarithms and exponents.

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HSF.BF.B.5: (+) Understand the inverse relationship between exponents and logarithms and use this relationship to solve problems involving logarithms and exponents.

What you'll learn

  1. State that the logarithm function y = log_b(x) is the inverse of the exponential function y = b^x
  2. Convert between exponential form (bʸ = x) and logarithmic form (log_b(x) = y) fluently
  3. Evaluate logarithmic expressions by converting to "what exponent?" questions: log_2(8) = ? -> 2^? = 8 -> 3
  4. Use the inverse relationship to simplify compositions: b^(log_b(x)) = x and log_b(b^x) = x
  5. Solve exponential equations using logarithms: b^x = c -> x = log_b(c)
  6. Solve logarithmic equations using exponents: log_b(x) = c -> x = bᶜ

Slides

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1

Logarithm as inverse function

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2

Solving with logarithms

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Practice

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