âVerticesâ are the points on the two arms which are closest; whereas the line segment which connects the arms is called the âmajor axis.â. In a parabola, the two arms of the curve, also called branches, become parallel to each other. In a hyperbola, the two arms or curves do not become parallel. A hyperbolaâs center is the midpoint of the major axis. Hyperbola is given by the equation XY=1. When the difference of distances between a set of points present in a plane to two fixed foci or points is a positive constant, it is called a hyperbola.
For other uses, see Henderson. Henderson is a common Scottish surname. The name is derived from patronymic form of the name Hendry, which is a Scottish form of Henry. Some Hendersons also derive their name from Henryson.The surname Henderson is borne by numerous unrelated families in Scotland.For example, the Hendersons of Fordell, in Fife, were the chief Lowland family of the name. This family descended from a family of Henrysons, from Dumfriesshire.ome Hendersons also derive their name from Henryson. The surname Henderson is borne by numerous unrelated families in Scotland. For example, the Hendersons of Fordell, in Fife, were the chief Lowland family of the name.
This interesting name is a patronymic form of the surnames Grave, which is of Middle English origin, and is an occupational name for a steward, from the Middle English (1200 - 1500) greyve, itself derived from the Old Norse greifi and the Low German greve.he first recorded spelling of the family name is shown to be that of Robert Greyue, which was dated 1255, Records of the Borough of Nottinghamshire, during the reign of King Henry 111, The Frenchman, 1216 - 1272.