The function exp(a) calculates a number which is the result of e^a, where e is the Euler's number. e ≈ 2.718281828459.

For example:

exp(0) = e^0 = 1

exp(1) = e^1 = e ≈ 2.718281828459

exp(2) = e^2 ≈ 7.3890561

exp(10) = e^10 ≈ 22026.4657948

The exp(a) function can also be displayed in a coordinate system, shown in the picture below.

exp.png