HP Prime Graphing Wireless Calculator - Manual (Page 46)

42 Geometry
Center
Syntax: center(Circle)
Plots the center of a circle. The circle can be defined by the
circle command or by name (for example, GC).
Example: center(circle(x^2+y2–x–y)) plots
point(1/2,1/2)
Intersection
Syntax: single_inter(Curve1, Curve2, [Point])
Plots the intersection of Curve1 and Curve2 that is closest to
Point.
Example:
single_inter(line(y=x), circle(x^2+y^2=1),
point(1,1)) plots point((1+i)*√2/2)
Intersections
Returns the intersection of two curves as a vector.
inter(Curve1, Curve2)
Example:
inter(8-x^2/6, x/2-1) returns [[6 2],[-9 -11/2]]
Line
Segment
Draws a segment defined by its endpoints.
segment(point1, point2)
Examples:
segment(1+2i, 4) draws the segment defined by the
points whose coordinates are (1, 2) and (4, 0).
segment(GA, GB) draws segment AB.
Ray
Given 2 points, draws a ray from the first point through the
second point.
half_line((point1, point2)