what is ln (-e) ?????

Answer 1

ln(-e) is a complex number (-e < 0)
ln(-e) = a+ib

log (ln) in the complex plane has multiple values.

e^(a+ib) = -e
e^a * e^(ib) = -e
e^a * (cosb + i.sinb) = -e
sin b = 0
b = 0 or pi
cos b = -1
b = pi
e^a * (-1) = -e
a = 1

ln(-e) = 1 + i(pi + 2pi.k) for all integral values of k

By convention, the notation should really be log(-e) to be precise.

Answer 2

There is no logarithm of negative number
ln -e does not exist

Answer 3

ln(-e) is undefined in real domain. The real domain of log(x) at any base is x>0.

Answer 4

It is undefined.

Let ln(-e) = x.
Then, e^x = -e, which has no solution.

Answer 5

Think this only works with positive numbers.............. or else it takes a group.