Question

Differentiate ln((4-x)/(4+x))

Answer 1

first separate the logs
ln[(4-x)/(4+x)]=
=ln(4-x) - ln(4+x)
then differentiate the two logs individually
=-1/(4-x) - 1/(4+x)
and you can then combine the fraction but its not necessary.

Answer 2

okay, thanks!