And so by approximating that we can essentially remove this entire equation and remove the k minus two term and that's because this reaction takes place at a negligible rate. So once again to simplify this equation here we can instead study the reaction at the beginning, that is when the time is approximately equal to zero, right at the beginning of that reaction. At that point in time, the rate V is equal to V Naught. So at this moment in time, very little product P has actually formed. And so the reverse reaction of the formation of the product, this reaction here, becomes negligible, and we can basically remove that from our equation and this will simplify our equation and that will allow us to actually derive the equation that we're looking for. So this is the equation that we want to use.