posted by anonymous .
why does ln(1/x)= -1/x ?
is that the derivative? if it is,
ln(1/x) can be written as:
ln (x^-1) = -ln(x)
since the derivative of ln (x) is 1/x, then
derivative of -ln(x) = ln(1/x)= -1/x
hope this helps.
ohhh~ Thank You!