how to find inverse?

reloadedxp
Tue, 24 Jun 2008 11:52:30 +0000

ivy, I got the answer of 16 using ur method…that is wrong cuz
log(16)-log(4) = .602059913

reason:
log(z) - log(4) = log(z)/log(4) —> wrong b/c it is log(z) - log(4) = log(z/4)

using that method:

log(z) - log(4) = log(z/4)
log(z/4) = 2
10^(2) = 100
(but since its z/4)
z=100 x 4
z=400

both methods give u the write answer