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WAEC Mathematics 2012 Question 32

Question 32

Logarithms

Which of these statements about y = 8√m is correct?

  1. A.log y = log 8 × log √m
  2. B.log y = 3 log 2 × ½ log m
  3. C.log y = 3 log 2 − ½ log m
  4. D.log y = 3 log 2 + ½ log m
Show the answer and explanation

Answer: D (log y = 3 log 2 + ½ log m)

Explanation

log y = log 8 + log m½ = 3 log 2 + ½ log m.