HP Prime Graphing NW280AAABA manual Perpendicular, Segment, Tangent

perpendicular

Draws a line through a given point that is perpendicular to a given line. The line may be defined by its name, two points, or an expression in x and y.

perpendicular(point, line) or perpendicular(point1, point2, point3)

Examples:

perpendicular(GA, GD) draws a line perpendicular to line D through point A.

perpendicular(3+2i, GB, GC) draws a line through the point whose coordinates are (3, 2) that is perpendicular to line BC.

perpendicular(3+2i,line(x–y=1)) draws a line through the point whose coordinates are (3, 2) that is perpendicular to the line whose equation is x – y = 1; that is, the line whose equation is y=–x+5.

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.

tangent

Draws the tangent(s) to a given curve through a given point.

The point does not have to be a point on the curve.

tangent(curve, point)

Examples:

tangent(plotfunc(x^2), GA) draws the tangent to the graph of y=x^2 through point A.

tangent(circle(GB, GC–GB), GA) draws one or more tangent lines through point A to the circle whose center is at point B and whose radius is defined by segment BC.

Geometry 171