Rearranging Logs

http://fizx.wdfiles.com/local--files/g484/2006%20January%20%28Question%20paper%2C%202824%29.pdf

Question 1bii.

Steps on how to rearrange to get "k".

P.S I don't do A-Level Maths.
Thank You.

http://fizx.wdfiles.com/local--files/g484/2006%20January%20%28Question%20paper%2C%202824%29.pdf

Question 1bii.

Steps on how to rearrange to get "k".

P.S I don't do A-Level Maths.
Thank You.

Take logs of both sides

Ln h = Ln 1.5 - kn

These are natural logs "Ln" (log to base e)

Original post by Stonebridge

Take logs of both sides

Ln h = Ln 1.5 - kn

These are natural logs "Ln" (log to base e)

So final rearrange will be

(ln h - ln 1.5)/ -k = n?

So final rearrange will be

(ln h - ln 1.5)/ -k = n?

Yes but
It's probably easier to write

kn = ln 1.5 - ln h

then...

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