January 31, 2015

Homework Help: Logarithms

Posted by Helper on Wednesday, March 9, 2011 at 12:24am.

I'm working on logarithmic equations and I'm stuck on how my book arrives at the next step.

First, they use the change of base formula on,

log(sqrt(2))(x^3 - 2)
(sqrt(2)) is the base,changing to base 2

log(sqrt(2))(x^3 - 2)=
log2(x^3 - 2)/(log2(sqrt(2))

I understand that part.
The next step, the book has
log2(x^3 - 2)/(log2(sqrt(2))=
2 log2(x^3 - 2)

How did they get = 2 log2(x^3 - 2)??

I tried applying the different rules but I just can't get how they arrive at
= 2 log2(x^3 - 2)??

Please help. Thanks in advance.

Answer this Question

First Name:
School Subject:

Related Questions

Precalculus - This is for solving exponential/logarithmic functions: (This is a ...
math(Please help) - 1) use the properties of logarithms to simplify the ...
pre calculous - use the properties of logarithms to write the expression as a ...
Pre-Calculus - Laws of Logarithms Without using a calculator use the change of ...
math - Use the Laws of logarithms to rewrite the expression log(base 2)(11x(x-9...
Math - The problem I have to solve is log with base 2 ^6 multiply by log base 6...
Precalculus - I'm studying for my precalc exam and have completed 42 practice ...
TRig WIth LoGs help1!! - i have problem i can't solve and the book is no help.. ...
algebra homework - please check my answers. Solve the logarithmic equation. Be ...
math - Use properties of logarithms to condense the logarithmic expression. ...