- #1
NihalRi
- 134
- 12
I'm very new to this. So in the context of finding the shortest path the idea is that you imagine another path that starts and ends at the same point. The shortest path is a minima so you differentiate and find for what values the differential is zero.
I don't understand why we need to imagine this varied path, why not differentiate the original path?
I don't understand why we need to imagine this varied path, why not differentiate the original path?