HP Prime Graphing Wireless Calculator Manual de usuario Pagina 244

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Incircle
An incircle is a circle that is tangent to each of a polygon’s sides. The HP Prime can draw an incircle that is
tangent to the sides of a triangle.
Tap at each vertex of the triangle, pressing after each tap.
Ellipse
Draws an ellipse, given the foci and either a point on the ellipse or a scalar that is one half the constant sum
of the distances from a point on the ellipse to each of the foci.
ellipse(point1, point2, point3) or ellipse(point1, point2, realk)
Examples:
ellipse(GA, GB, GC) draws the ellipse whose foci are points A and B and which passes through point C.
ellipse(GA, GB, 3) draws an ellipse whose foci are points A and B. For any point P on the ellipse, AP
+BP=6.
Hyperbola
Draws a hyperbola, given the foci and either a point on the hyperbola or a scalar that is one half the constant
dierence of the distances from a point on the hyperbola to each of the foci.
hyperbola(point1, point2, point3) or hyperbola(point1, point2, realk)
Examples:
hyperbola(GA, GB, GC) draws the hyperbola whose foci are points A and B and which passes through
point C.
hyperbola(GA, GB, 3) draws a hyperbola whose foci are points A and B. For any point P on the
hyperbola, |AP-BP|=6.
Parabola
Draws a parabola, given a focus point and a directrix line, or the vertex of the parabola and a real number that
represents the focal length.
parabola(point,line) or parabola(vertex,real)
196 Chapter 9 Geometry
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