Math Problem Statement

Expand the logarithm fully using the properties of logs. Express the final answer in terms of log x, log y, and log z.

Solution

To expand the logarithmic expression logx23yz4\log \frac{\sqrt[3]{x^2}}{yz^4} fully using the properties of logarithms, we proceed as follows:

Step-by-step Expansion:

  1. Apply the logarithmic quotient rule: [ \log \frac{\sqrt[3]{x^2}}{yz^4} = \log \sqrt[3]{x^2} - \log(yz^4) ]

  2. Expand the numerator using the power and root properties: The cube root can be expressed as a fractional exponent: x23=x2/3.\sqrt[3]{x^2} = x^{2/3}. So, logx23=log(x2/3)=23logx\log \sqrt[3]{x^2} = \log(x^{2/3}) = \frac{2}{3} \log x.

  3. Expand the denominator using the product rule: log(yz4)=logy+logz4.\log(yz^4) = \log y + \log z^4.

  4. Simplify logz4\log z^4 using the power rule: logz4=4logz.\log z^4 = 4 \log z.

Final Expression:

Combining all the terms, we get: logx23yz4=23logx(logy+4logz).\log \frac{\sqrt[3]{x^2}}{yz^4} = \frac{2}{3} \log x - (\log y + 4 \log z).

Simplify further: logx23yz4=23logxlogy4logz.\log \frac{\sqrt[3]{x^2}}{yz^4} = \frac{2}{3} \log x - \log y - 4 \log z.


Would you like more details or clarifications?

Related Questions:

  1. What are the general rules for expanding logarithms?
  2. How do fractional exponents affect logarithmic expressions?
  3. What is the difference between the power rule and the product rule in logarithms?
  4. How does the logarithmic quotient rule simplify fractions within logarithms?
  5. Can this expansion be applied to natural logarithms (ln\ln) as well?

Tip:

When expanding logarithms, always handle roots and exponents first, as they affect individual terms directly.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Algebraic Manipulation
Properties of Logarithms

Formulas

Logarithm quotient rule: log(a/b) = log a - log b
Logarithm product rule: log(ab) = log a + log b
Logarithm power rule: log(a^b) = b * log a
Fractional exponent: a^(1/n) = nth root of a

Theorems

Properties of Logarithms

Suitable Grade Level

Grades 10-12