The uniform polygonization algorithm decomposes the bounding box of the implicit shape using a simplified cell complex. It then identities the set of cells that are intersected by the implicit surface and for each of these cells, it generates an element of the polygonal mesh approximating the surface. These settings deal with size and resolution of implicit bounding box.
Parameters from and to defines the restricted area that implicit surface must be polygonized.
There are three groups of these parameters that allow you to set the bounding box dimensions separately in three dimensional space. The bounding box trims implicit surface in intersection of its six faces. That can make truncated objects in some cases. To avoid this problem you may need to adjust the size of the bounding box to fit the whole object inside. In this case implicit surface should create a solid object like sphere in the example.

Example 1: The surface doesn’t need any subdivision along Z direction because the formula is independent of Z parameter (extrusion). We can use higher value of subdivision for X and Y directions to achieve smooth result.