Math Problem Statement

Evaluate \( \log_{32} 4 \) without using technology.

Solution

To solve log324\log_{32} 4 without using technology, we’ll apply the change of base and properties of logarithms.

  1. Rewrite log324\log_{32} 4 in terms of exponentials: The equation log324=x\log_{32} 4 = x implies that: 32x=432^x = 4

  2. Express 32 and 4 as powers of 2:

    • 32=2532 = 2^5
    • 4=224 = 2^2

    Substitute these into the equation: (25)x=22(2^5)^x = 2^2

  3. Simplify the equation: Using the power rule (am)n=amn(a^m)^n = a^{m \cdot n}, we get: 25x=222^{5x} = 2^2

  4. Set the exponents equal to each other: Since the bases are the same, we can equate the exponents: 5x=25x = 2

  5. Solve for xx: x=25x = \frac{2}{5}

Thus, log324=25\log_{32} 4 = \frac{2}{5}

Would you like further details on any step, or have any questions?

Here are five related questions to consider:

  1. How would you solve log3216\log_{32} 16 without using technology?
  2. Can you evaluate log416\log_{4} 16 and compare the method?
  3. How does the change of base formula apply to log324\log_{32} 4?
  4. What are the advantages of expressing logarithms in terms of smaller bases?
  5. How do properties of logarithms simplify complex expressions?

Tip: Remember that expressing numbers as powers of a common base often makes logarithmic equations much easier to solve.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Exponents
Change of Base

Formulas

\( a^{m \cdot n} = a^{m \cdot n} \)

Theorems

Power Rule of Exponents

Suitable Grade Level

Grades 10-12