We can write these equations in non-dimensional form and the non-dimensional form simply becomes, you just you know, it will become all that that happens is the gets two dashes here, I had let me see one equation. See, u 1 was there the u 1 has become 1, that is why this you see m u 1 has become just m dash and this is, this is minus is not very important that, now if you look at that see I can call this to be, I will tell really one thing