Hey sepoto.
Basically the reason why has to do with the properties of exponentials where e^(a+b) = e^a * e^b. This is where the multiplication property comes in.
So if both sides are exponentiated with base e then the resulting left side of the equation comes out to by my solutions manual:
I am wondering by what arithmetic or property that the "+" on the left hand side of the equation turned into a "*" or a multiplication.
The whole equation turns out to be:
Thanks for any responses...