HP Prime Graphing NW280AAABA manual Circle, Conic, CircumcircleGA, GB, GC draws the circle

Curve

function

Draws the plot of a function, given an expression in the independent variable x. Note the use of lowercase x.

plotfunc(Expr)

Example:

Example: plotfunc(3*sin(x)) draws the graph of y=3*sin(x).

circle

Draws a circle, given the endpoints of the diameter, or a center and radius, or an equation in x and y.

circle(point1, point2) or circle(point1, point 2-point1) or circle(equation)

Examples:

circle(GA, GB) draws the circle with diameter AB.

circle(GA, GB-GA)draws the circle with center at point A and radius AB.

circle(x^2+y^2=1) draws the unit circle. This command can also be used to draw an arc.

circle(GA, GB, 0, π/2) draws a quarter-circle with diameter AB.

circumcircle

Draws the circumcircle of a triangle; that is, the circle circumscribed about a triangle.

circumcircle(point1, point2, point3)

Example:

circumcircle(GA, GB, GC) draws the circle

circumscribed about ΔABC

conic

Plots the graph of a conic section defined by an expression in x and y.

conic(expr)

Example:

conic(x^2+y^2-81)draws a circle with center at (0,0) and radius of 9

176 Geometry