Deriving The Feynman Path Integral | Path Integral Formulation

In this lecture the goal is to derive the Feynman's Path Integral, from previous lecture you knownow the reason for doing so, that is why do we need the concept of infinite many paths. We will begin by considering a particular path from S to O and break it into segments.Finally, we will see that our result screams out to integrate overall the possible paths.