Math Problem Statement

What is the value of the expression 81^log_3(2)? Give your answer as an integer.

Solution

The expression from the image is 81log3281^{\log_3 2}. Let's solve this step by step.

  1. Rewrite 81 as a power of 3. Since 81=3481 = 3^4, we can express the original problem as: (34)log32(3^4)^{\log_3 2}
  2. Apply the power of a power rule: (34)log32=34log32(3^4)^{\log_3 2} = 3^{4 \cdot \log_3 2}
  3. Use the logarithmic identity alogab=ba^{\log_a b} = b, which simplifies this expression: 34log32=24=163^{4 \cdot \log_3 2} = 2^4 = 16

Thus, the value of the expression is 16\boxed{16}.

Would you like more details or have any other questions?

Here are five related questions to deepen your understanding:

  1. How would you solve 27log3527^{\log_3 5}?
  2. Can you simplify 9log349^{\log_3 4}?
  3. How do logarithmic properties apply in expressions like alogbca^{\log_b c}?
  4. What is the general form for simplifying xlogbyx^{\log_b y}?
  5. How does the change of base formula help with logarithms?

Tip: Remember that expressing numbers in terms of a common base (like powers of 2 or 3) is often key to simplifying complex expressions with logarithms.

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Math Problem Analysis

Mathematical Concepts

Exponentiation
Logarithms
Simplifying Exponential Expressions

Formulas

a^(log_b c) = c, where a and b share the same base
Power of a power rule: (x^m)^n = x^(m * n)

Theorems

Logarithmic Identity: a^(log_a b) = b

Suitable Grade Level

Grades 10-12