document.write( "Question 733170: use log base 4 of 3 = .7925 and log base 4 of 5= 1.1610 to approximate the value of the expression log base 4 of 18. i was wondering how exactly to do this? \n" ); document.write( "
Algebra.Com's Answer #448302 by Alan3354(69443)\"\" \"About 
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use log base 4 of 3 = .7925 and log base 4 of 5= 1.1610 to approximate the value of the expression log base 4 of 18. i was wondering how exactly to do this?
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\n" ); document.write( "18 = 3*3*2
\n" ); document.write( "log(18) = 2*log(3) + log(2)
\n" ); document.write( "2 = sqrt(4) --> log(2) = 1/2
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\n" ); document.write( "\"log%284%2C18%29+=+2log%284%2C3%29+%2B+1%2F2\"
\n" ); document.write( "= 2.085
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