Evaluate 1/(log_2 π) + 1/(log_6 π).

Difficulty: Medium

Correct Answer: greater then 1

Explanation:


Introduction / Context:
Use the reciprocal log identity: 1/log_a b = log_b a (a, b > 0, a, b ≠ 1). This lets us express the sum in a common base and combine using log addition rules.


Given Data / Assumptions:

  • Terms: 1/(log_2 π) and 1/(log_6 π).
  • π ≈ 3.1416; bases 2 and 6 are valid (≠ 1).


Concept / Approach:

  • 1/log_a b = log_b a ⇒ 1/log_2 π = log_π 2; 1/log_6 π = log_π 6.
  • Sum ⇒ log_π 2 + log_π 6 = log_π (12).


Step-by-Step Solution:

S = log_π 2 + log_π 6 = log_π (12)Since 12 > π (≈ 3.1416), log_π (12) > 1


Verification / Alternative check:
Compute approximately: ln 12 / ln π ≈ 2.4849 / 1.1447 ≈ 2.17 > 1.


Why Other Options Are Wrong:

  • “Less than 1” contradicts 12 > π.
  • “Between 5 and 6” grossly overestimates.
  • “None of these” is incorrect since “greater than 1” is true.


Final Answer:
greater then 1

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