# Summation of exponentials, as a multiplication of exponentials?

EngWiPy
Hello,

Can we write a summation of exponentials, as a multiplication of exponentials?

Regards

## Answers and Replies

Homework Helper

Only like
$$e^a e^b = e^{a + b}$$

There is no such rule as
$$e^a + e^b = e^{a b}$$
or something like that.