Logarithm multiplication property error, can't figure out why.
I know there is a mistake and where it is but I can't figure out why.
From here I do:
Then I take the natural logarithms on both sides;
Now I apply multiplication property so should equal But here it seems that I'm making a mistake, can't figure out why:
subtract on both sides:
Then it should be:
but it's not the right result..
Thanks in advance :)