compute this and practice we don't often pay attention to what it really means we just say hey we want this we know this thing here does not depend on X so we can ignore it as long as at the end we do a rescaling of all entries with the same scaling you cannot rescale one entry for x1 by the other one the other you need a fixed rescaling across all entries that you computed so the things written on the board we also have on the slides where often we have a pairing between the discrete version where there's a summation and