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JAMB Mathematics 1987 Question 14

Question 14

Logarithms

Simplify without using tables
(log26 − log23)/(log28 − 2log2½)

  1. A.1/5
  2. B.1/2
  3. C.−1/2
  4. D.log23/log27
Show the answer and explanation

Answer: A (1/5)

Explanation

The top is log2(6/3) = log22 = 1. The bottom is 3 − 2(−1) = 5. So the value is 1/5.