Question

What is the domain and range of `e^x`?

Answer 1

Every exponential function has domain `(-oo, oo)` and range `(0, oo)`
For base greater than `1` the graph is:
graph{y=e^x [-12.97, 15.52, -5.67, 8.57]}

For base, `b` with `0 < b < 1`, the graph looks like:

graph{y=e^(-x) [-7.43, 12.58, -5.646, 4.355]}