In the case of a repulsive force varying as the distance from the origin, the equation of motion is of the type the solution of which is x=Ae+Be, (10)
Grotesque and repulsive wooden figures, animals and the bones of chiefs were the objects of worship. Human sacrifices were offered whenever a temple was to be dedicated, or a chief was sick, or a war was to be undertaken; and these occasions were frequent.
He grew up among enemies, and became artful, suspicious and self-controlled, concealing his feeling behind the mask of an immobile, almost repulsive, coldness.
Perhaps to the student there is no part of elementary mathematics so repulsive as is spherical trigonometry.