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Solution 3.3:3c

From Förberedande kurs i matematik 1

Revision as of 06:33, 2 October 2008 by Tek (Talk | contribs)
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First, we rewrite the number 0.125 as a fraction which we also simplify

0.125=1251000=103525=(25)3555=123=23.

Because 0.125 was expressed as a power of 2, the logarithm can be calculated in full

log20.125=log223=(3)log22=(3)1=3.