An ellipse has 2 foci. They are the points of the major axis which are at distance $a$ from the intersection between the minor axis and the ellipse. The distance between the foci and the center is then called the linear eccentricity $f$.
Find Your Surgeon. Find Your Surgeon. The average cost of laser skin resurfacing is $2,222 for ablative and $1,113 for non-ablative, according to ASPS 2012 statistics. The cost of laser skin resurfacing may vary, and the aforementioned fees are the national average surgeon/physician fee only.ind Your Surgeon. The average cost of laser skin resurfacing is $2,222 for ablative and $1,113 for non-ablative, according to ASPS 2012 statistics.
Cost of Resurfacing. Resurfacing usually costs anywhere from $1 to $2 per square foot. The price varies based on factors such as your geographic location, local competition, the season and the condition of your driveway. So the cost to resurface a 3,000 square foot driveway would be anywhere from $3,000 to $6,000.