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Which of these statements about y = \(\sqrt{8m}\) is correct?

Mathematics
WAEC 2012

Which of these statements about y = \(\sqrt{8m}\) 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 = \(\frac{3}{2}\) log 2 + \(\frac{1}{2}\) log m
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Correct Answer: Option D
Explanation

y = \(\sqrt{8m}\); log y = log \(\sqrt{8m}\)

log y = log \(\sqrt{8}\) + log \(\sqrt{m}\)

log y = \(\frac{1}{2}\)log 2\(^3\) + log m\(\frac{1}{2}\)

log y = \(\frac{3}{2}\) log 2 + \(\frac{1}{2}\) log m


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