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More Logs (Posted on 2002-06-17) Difficulty: 1 of 5
If
     log 2(3) = x
What is
     log 2(9) ?

See The Solution Submitted by Dulanjana    
Rating: 1.5000 (16 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution re(2): how about this one? :p | Comment 11 of 14 |
(In reply to re: how about this one? :p by Jer)

Log2(72)

= log2(2^3*3^2)

= log2(2^3) + log2(3^2)

= 3 + 2log2(3)

= 3 + 2x


log2(6)

= log2(2*3)

= log2(3) + log2(1)

= x+1


Consequently, we must have:

log72(6)

= log2(6)/log2(72)

= (x+1)/(2x+3)

Edited on March 15, 2008, 4:54 am
  Posted by K Sengupta on 2008-03-15 04:34:24

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