Use the properties of logarithms to expand [tex]\( \log \frac{x^7}{y} \)[/tex].

Each logarithm should involve only one variable and should not have any exponents or fractions.

Assume that all variables are positive.



Answer :

Certainly! Let's expand the given logarithmic expression [tex]\(\log \left( \frac{x^7}{y} \right)\)[/tex] using the properties of logarithms:

1. Quotient Rule of Logarithms: The logarithm of a quotient is the difference of the logarithms. This rule states that:
[tex]\[ \log \left( \frac{A}{B} \right) = \log(A) - \log(B) \][/tex]
Applying this rule, we can separate the logarithms of the numerator and the denominator:
[tex]\[ \log \left( \frac{x^7}{y} \right) = \log(x^7) - \log(y) \][/tex]

2. Power Rule of Logarithms: The logarithm of an exponentiated value is the exponent times the logarithm of the base. This rule states that:
[tex]\[ \log(A^B) = B \cdot \log(A) \][/tex]
Applying this rule to the term [tex]\(\log(x^7)\)[/tex], we get:
[tex]\[ \log(x^7) = 7 \cdot \log(x) \][/tex]

3. Combining the Results: Substitute the expanded form of [tex]\(\log(x^7)\)[/tex] into the expression from step 1:
[tex]\[ \log \left( \frac{x^7}{y} \right) = 7 \cdot \log(x) - \log(y) \][/tex]

Therefore, the expanded form of [tex]\(\log \left( \frac{x^7}{y} \right)\)[/tex] is:
[tex]\[ 7 \cdot \log(x) - \log(y) \][/tex]

This is the required expansion where each logarithm involves only one variable and does not include any exponents or fractions.