Express \(\log \frac{1}{8} + \log \frac{1}{2}\) in terms of \(\log 2\).

Assessment: WAEC SSCE - Further Mathematics - 2013 (Objective) Subject: Further Mathematics

Question 1 Report

Express \(\log \frac{1}{8} + \log \frac{1}{2}\) in terms of \(\log 2\).

Answer Details
We know that: \[\log a + \log b = \log ab\] Using this property, we can rewrite the given expression as: \[\log \left(\frac{1}{8} \cdot \frac{1}{2}\right) = \log \frac{1}{16}\] Now, we use another property of logarithms: \[\log a^b = b\log a\] to rewrite \(\log \frac{1}{16}\) in terms of \(\log 2\): \[\log \frac{1}{16} = \log 2^{-4} = -4\log 2\] Therefore, \(\log \frac{1}{8} + \log \frac{1}{2} = -4\log 2\) and the answer is: \(-4 \log 2\).

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