Expand log subscript start fraction 1 over 2 end fraction baseline left parenthesis start fraction 3x superscript 2 baseline over 2 end fraction right parenthesis using the properties and rules for logarithms.

(1 point)
Responses

log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3 right parenthesis plus 2 log left parenthesis x right parenthesis minus log subscript start fraction 1 over 2 end fraction baseline left parenthesis 2 right parenthesis
Image with alt text: log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3 right parenthesis plus 2 log left parenthesis x right parenthesis minus log subscript start fraction 1 over 2 end fraction baseline left parenthesis 2 right parenthesis

2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3 right parenthesis plus 2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis x right parenthesis plus 1
Image with alt text: 2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3 right parenthesis plus 2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis x right parenthesis plus 1

2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3x right parenthesis plus 1
Image with alt text: 2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3x right parenthesis plus 1

2 log subscript start fraction 1 over 2 end fraction baseline left parenthesis 3x right parenthesis minus log subscript start fraction 1 over 2 end fraction baseline left parenthesis 2 right parenthesis

1 answer

To expand the expression \(\log_{\frac{1}{2}}\left(\frac{3x^2}{2}\right)\) using the properties and rules of logarithms, we can apply the following logarithmic properties:

  1. \(\log_b\left(\frac{M}{N}\right) = \log_b(M) - \log_b(N)\) (the quotient rule)
  2. \(\log_b(M^k) = k \cdot \log_b(M)\) (the power rule)

Now, let's use these properties to expand the given logarithm:

  1. Start with the original expression: \[ \log_{\frac{1}{2}}\left(\frac{3x^2}{2}\right) \]

  2. Apply the quotient rule: \[ = \log_{\frac{1}{2}}(3x^2) - \log_{\frac{1}{2}}(2) \]

  3. Now, we can expand \(\log_{\frac{1}{2}}(3x^2)\) using the product rule (\(\log_b(MN) = \log_b(M) + \log_b(N)\)): \[ = \log_{\frac{1}{2}}(3) + \log_{\frac{1}{2}}(x^2) - \log_{\frac{1}{2}}(2) \]

  4. Now, apply the power rule to \(\log_{\frac{1}{2}}(x^2)\): \[ = \log_{\frac{1}{2}}(3) + 2\log_{\frac{1}{2}}(x) - \log_{\frac{1}{2}}(2) \]

Putting it all together, we have: \[ \log_{\frac{1}{2}}(3) + 2\log_{\frac{1}{2}}(x) - \log_{\frac{1}{2}}(2) \]

So the expanded logarithmic expression is:

\[ \log_{\frac{1}{2}}(3) + 2 \log_{\frac{1}{2}}(x) - \log_{\frac{1}{2}}(2) \]

Looking at the provided responses, the equivalent response is:

\[ \log_{\frac{1}{2}}(3) + 2 \log(x) - \log_{\frac{1}{2}}(2) \]

Thus, that corresponds to the first option you presented.