Which of these statements about y = 8\(\sqrt{m}\) is correct?
MATHEMATICS
WAEC 2012
Which of these statements about y = 8\(\sqrt{m}\) is correct?
- A. log y = log 8 x log \(\sqrt{m}\)
- B. log y = 3 log 2 x \(\frac{1}{2}\) log m
- C. log y = 3 log 2 - \(\frac{1}{2}\) log m
- D. log y = 3 log 2 + \(\frac{1}{2}\) log m
Correct Answer: D. log y = 3 log 2 + \(\frac{1}{2}\) log m
Explanation
y = 8\(\sqrt{m}\); log y = log 8\(\sqrt{m}\)
log y = log 8 + log \(\sqrt{m}\)
log y = log 23 + log m\(\frac{1}{2}\)
log y = 3 log 2 + \(\frac{1}{2}\) log m
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