Question

inverse of y=ln(-2x)?

Answer 1

how do i deal with natural logs?

Answer 2

http://www.wolframalpha.com/input/?i=inverse+of+y%3dln(-2x)&incTime=true

Answer 3

x=ln(-2y)
\[e^{x} = -2y\]
\[-e^{x}/2 = y\]
\[f^{-1}(x)={\frac{ -e^{x} }{ 2 }}\]