Homework Help: math

Posted by mark on Monday, March 19, 2012 at 4:17am.

Determine the value of each of the following logarithmic expressions. Do not change bases.

A) log8 4 <----- 8 is subscript

b)log 1/3 27 <---- 1/3 is subscript

math - Reiny, Monday, March 19, 2012 at 8:43am
let x = log₈ 4
8^x = 4
(2^3)^x = 2^2
2^(3x) = 2^2
3x=2
x = 2/3

do the 2nd the same way, let me know what you got
math - james, Tuesday, March 20, 2012 at 12:35am
log(27) / log(1/3)
log(3^3) / log(3^-1)
3 log(3)/-1 log(3)
-3

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