Sunday, December 25, 2011

Reduce to the simplest form: log2(24)/log96(2) -log2(192)/log12(2)

We'll write log 2 (24), using the product rule of
logarithms:


log 2 (24) = log 2 (2) + log 2
(12)


We'll write log 96 (2) = 1/ log 2
(96)


log 2 (96) = 1 + log 2 (2) + log 2 (2) + log 2
(12)


log 2 (96) = 3 + log 2
(12)


log 2 (192) = 4 + log 2
(12)


log 12 (2) = 1/ log 2
(12)


We'll re-qrite the
expression:


E = [1 + log 2 (12)][3 + log 2 (12)] - [4 + log
2 (12)]*log 2 (12)


We'll remove the brackets and we'll
replace log 2 (12) by t:


E = 3 + 4t + t^2 - 4t -
t^2


We'll combine and eliminate like
terms:


E = 3


The
given expression reduced to the simplest form is E =
3.

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