WAEC - Mathematics (2001 - No. 3)
Evaluate \(log_{10}5 + log_{10}20\)
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解释
\(log_{10}5 + log_{10}20\)
\(log_{10}[5\times 20]\)
\(log_{10}100\)
\(log_{10}10^2\)
\(2log_{10}10 = 2\)
\(log_{10}[5\times 20]\)
\(log_{10}100\)
\(log_{10}10^2\)
\(2log_{10}10 = 2\)