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August 29th, 2018, 01:11 AM   #1
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Logarithm

Given log2=0.69, log3=1.10 and log7=1.90, all to a fixed base, find log10.5 without using table.

Last edited by skipjack; August 29th, 2018 at 05:32 AM.
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August 29th, 2018, 05:30 AM   #2
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log(10.5) = log(7×3/2) = log(7) + log(3) - log(2)
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