the re it was Δ t < 0 > 0 whatever is given 0 0, but at t = 0 it is undefined, but here are taking Δ t - t0. So, it is 0, but except at t = t0. So, the integrate is 0 except at t = t0 because it is undefined.
तो, यह 0 है, लेकिन t = t0 को छोड़कर। तो, t = t0 को छोड़कर इंटीग्रेट 0 है क्योंकि यह अपरिभाषित है।