the only* non-zero function whose derivative is itself

* except its multiples such as −2 𝑒𝑥, which are… just… uh… derivative works

I think you forgot about e^x + 1, and e^x + 2, and … …

(My profs always dunked on me for forgetting the + c and I can’t resist doing it to someone else, I’m sorry)

For real tho, great explanation