Evaluating logarithms without a calculator

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Now Playing:Evaluate logarithms without a calculator – Example 1a
Examples
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  1. Evaluate:
    1. log832\log_832

    2. log51\log_51
      [useful rule: logb1=0] \log_b1 = 0]

    3. log55\log_55
      [useful rule: logbb=1] \log_bb = 1]

    4. -3log161024 \log_{16}1024

    5. log3(181)\log_3 (\frac{1}{81})

    6. log2564 \log_2 {^5}\sqrt{64}

Practice
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Evaluate Logarithms Without A Calculator 1a