This constant K which is not known which has to be chosen depending on the characteristics of the transformation we are doing or depending on the kind of polygon that is using. So, we can always adjust this particularly k. So that similarly if we say that suppose, a is in minus infinity you can say a n is minus infinity. You can also say that that are will not contribute to the. So, any point. So, only the finite point will contribute if n’s are vertices, the vertices which are at only finite point then contribute to the transformation, while other points will not contribute the points at infinity, what it says the infinite will not contribute to the transformation. This is what this helps in a many way to solve simplify the problem to large extent.