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2004


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#1 JiLL

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Posted 02 May 2005 - 02:49 PM

This log question is really catching me out!

I thought i was doin ok until i came to this question.

Could someone please help me with this one??

The x+1 is catching me out !

thanx


beast

#2 coca

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Posted 02 May 2005 - 03:55 PM

log2 means log of base 2, I couldn't find the right character sad.gif

log2(x+1) - 2log2(3) = 3
log2(x+1) - log2(3^2) = 3
log2((x+1)/3^2) = 3
(x+1)/3^2 = 2^3
x+1 = 2^3 * 3^2 = 8 * 9 = 72
x = 72 - 1 = 71
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#3 JiLL

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Posted 02 May 2005 - 04:37 PM

thanx tongue.gif
beast





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