HP Prime Graphing Wireless Calculator Uživatelský manuál Strana 253

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barycenter
Calculates the hypothetical center of mass of a set of points, each with a given weight (a real number). Each
point, weight pair is enclosed in square brackets as a vector.
barycenter([[point1, weight1], [point2, weight2],…,[pointn, weightn]])
Example:
barycenter returns point (1, 1/4)
convexhull
Returns a vector containing the points that serve as the convex hull for a given set of points.
convexhull(point1, point2, …, pointn)
Example:
convexhull(0,1,1+i,1+2i,-1-i,1-3i,-2+i) returns [1-3*i 1+2*i -2+ i -1- i ]
distance2
Returns the square of the distance between two points or between a point and a curve.
distance2(point1, point2) or distance2(point, curve)
Examples:
distance2(1+i, 3+3i) returns 8.
If GA is the point at (0, 0) and GB is dened as plotfunc(4-x^2/4), then distance2(GA, GB) returns 12.
division_point
For two points A and B, and a numerical factor k, returns a point C such that C-B=k*(C-A).
division_point(point1, point2, realk)
Example:
division_point(0,6+6*i,4) returns point (8,8)
equilateral_triangle
Draws an equilateral triangle dened by one of its sides; that is, by two consecutive vertices. The third point is
calculated automatically, but is not dened symbolically. If a lowercase variable is added as a third argument,
then the coordinates of the third point are stored in that variable. The orientation of the triangle is
counterclockwise from the rst point.
equilateral_triangle(point1, point2) or equilateral_triangle(point1,
point2, var)
Examples:
equilateral triangle(0,6) draws an equilateral triangle whose rst two vertices are at (0, 0) and
(6,0); the third vertex is calculated to be at (3,3*√3).
Geometry functions and commands 205
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