Question
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se the properties of logarithms to rewrite the following expression. Assume all variables represent positive real numbers. \( 6 \log _{6} x-7 \log _{6} y \) \( 6 \log _{6} x-7 \log _{6} y=\square \)

Ask by Floyd Chang. in the United States
Nov 26,2024

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Answer

\[ \log_{6}\left(\frac{x^6}{y^7}\right) \]

Solution

To rewrite the expression \( 6 \log_{6} x - 7 \log_{6} y \) using the properties of logarithms, we can apply the following properties: 1. \( a \log_b c = \log_b(c^a) \) (the power rule) 2. \( \log_b a - \log_b c = \log_b\left(\frac{a}{c}\right) \) (the quotient rule) Using these properties, we can rewrite the expression step by step: 1. Apply the power rule to each term: \[ 6 \log_{6} x = \log_{6}(x^6) \] \[ 7 \log_{6} y = \log_{6}(y^7) \] 2. Substitute these into the original expression: \[ 6 \log_{6} x - 7 \log_{6} y = \log_{6}(x^6) - \log_{6}(y^7) \] 3. Now apply the quotient rule: \[ \log_{6}(x^6) - \log_{6}(y^7) = \log_{6}\left(\frac{x^6}{y^7}\right) \] Thus, the expression can be rewritten as: \[ 6 \log_{6} x - 7 \log_{6} y = \log_{6}\left(\frac{x^6}{y^7}\right) \] So, the final answer is: \[ \log_{6}\left(\frac{x^6}{y^7}\right) \]

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Bonus Knowledge

You can use the properties of logarithms to simplify \( 6 \log_{6} x - 7 \log_{6} y \) into a single logarithmic expression. By applying the power rule, which states that \( a \log_b c = \log_b(c^a) \), you can rewrite it as: \[ \log_{6}(x^6) - \log_{6}(y^7). \] Then, using the quotient rule, you can combine these to get: \[ \log_{6}\left(\frac{x^6}{y^7}\right). \] This rewritten expression shows the relationship between \( x \) and \( y \) in a clean logarithmic format! In real-world applications, logarithmic properties are often used in fields like sound intensity, pH measurements, and even in calculating compound interest. This representation lets you analyze relationships between quantities more easily, making logarithms not just a tool for math problems, but immensely practical for everyday phenomena in science and finance!

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