ln e^129-e^ln95=
U Unco Senior Member Joined Jul 21, 2005 Messages 1,134 Jan 30, 2006 #2 \(\displaystyle \mbox{ f(x) = \ln{(x)}}\) and \(\displaystyle \mbox{f(x) = e^x}\) are inverse functions: \(\displaystyle \mbox{ \ln{\left(e^x\right)} = x}\) \(\displaystyle \mbox{ e^{\left(\ln{(x)}\right)} = x}\)
\(\displaystyle \mbox{ f(x) = \ln{(x)}}\) and \(\displaystyle \mbox{f(x) = e^x}\) are inverse functions: \(\displaystyle \mbox{ \ln{\left(e^x\right)} = x}\) \(\displaystyle \mbox{ e^{\left(\ln{(x)}\right)} = x}\)
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Jan 30, 2006 #3 Unco said: inverse functions: Click to expand... For x > 0, of course.
