The inverse function of f(x) = ex has a (horizontal/vertical)
asymptote at (x=0/y=0)

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

i think that you should ask google for the answer to that problem because if we don't know it google does