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Use the properties of logarithms to expand [tex]\log \frac{y^4}{z}[/tex].

Each logarithm should involve only one variable and should not have any exponents or fractions. Assume that all variables are positive.

[tex]\log \frac{y^4}{z} = \log y^4 - \log z = 4 \log y - \log z[/tex]


Sagot :

To expand the given logarithmic expression [tex]\(\log \frac{y^4}{z}\)[/tex] using properties of logarithms, follow these detailed steps:

1. Applying the Quotient Rule:

The quotient rule for logarithms states that:

[tex]\[ \log \left( \frac{a}{b} \right) = \log(a) - \log(b) \][/tex]

Here, [tex]\(a = y^4\)[/tex] and [tex]\(b = z\)[/tex].

So, we can write:

[tex]\[ \log \frac{y^4}{z} = \log(y^4) - \log(z) \][/tex]

2. Applying the Power Rule:

The power rule for logarithms states that:

[tex]\[ \log(a^b) = b \cdot \log(a) \][/tex]

Here, [tex]\(a = y\)[/tex] and [tex]\(b = 4\)[/tex].

So, we can write:

[tex]\[ \log(y^4) = 4 \cdot \log(y) \][/tex]

3. Substitute Back:

Substitute [tex]\(4 \cdot \log(y)\)[/tex] back into the expression for the logarithm of the quotient:

[tex]\[ \log \frac{y^4}{z} = 4 \cdot \log(y) - \log(z) \][/tex]

Therefore, the expanded form of [tex]\(\log \frac{y^4}{z}\)[/tex] is:

[tex]\[ 4 \log(y) - \log(z) \][/tex]