3 ms·Why is e^(pi I) = -1?3 points by stopachka 6y agodgritsko 6y ago3Blue1Brown's video "Understanding e to the i pi in 3.14 minutes" is a nice compliment to this post. https://www.youtube.com/watch?v=v0YEaeIClKY https://www.youtube.com/watch?v=v0YEaeIClKY