Darboux Product
The power of a point is a special case of the Darboux product between two circles, which is given by
where A1 and A2 are the centers of the two circles and r1 and r2 are their radii. The power of a point arises in the special case that one of the radii is zero. If the two circles intersect, then their Darboux product is
where φ is the angle of intersection.
Read more about this topic: Power Of A Point
Famous quotes containing the word product:
“The product of mental labor—science—always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.”
—Karl Marx (1818–1883)