Homework Help: Pre Calculus 12

Posted by Shreya on Wednesday, January 23, 2013 at 8:41pm.

Laws of logarithms

evualuat using change of base rule

log(√8)16

^the square root 8 is supposed to be subscript.

the answer i got was 8/3, not sure if that is right

Pre Calculus 12 - Reiny, Wednesday, January 23, 2013 at 9:49pm
You are correct

This can be done without a calculator
let log _√816 = x

(√8)^x = 16
( (2^3)^(1/2)^x = 2^4

3(1/2)x = 4
3x = 8
x = 8/3
Pre Calculus 12 - Shreya, Wednesday, January 23, 2013 at 10:07pm
Thanks very much Reiny :)
Pre Calculus 12 - Reiny, Wednesday, January 23, 2013 at 10:27pm
welcome

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