The exp value in the part 1.1 sigmoid function

Course Q&A Natural Language Processing NLP with Classification and Vector Spaces
1

Hi I do not know a lot of math. The exp in the sigmoid function is not very clear to me. I tried to type
h = 1 / (1 + exp ** z) but the computer is also not sure what exp actually does. should I just type a number like 2 or 3?

2

https://numpy.org/doc/stable/reference/generated/numpy.exp.html

3

Thank you. let me check