HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 240)

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Perpendicular

Draws a line through a given point that is perpendicular to a given line. The line may be dened 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.

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 dened by segment BC.

Median

Given three points that dene a triangle, creates the median of the triangle that passes through the rst point

and contains the midpoint of the segment dened by the other two points.

median_line(point1, point2, point3)

Example:

median_line(0, 8i, 4) draws the line whose equation is y=2x; that is, the line through (0,0) and (2,4),

the midpoint of the segment whose endpoints are (0, 8) and (4, 0).

Altitude

Given three non-collinear points, draws the altitude of the triangle dened by the three points that passes

through the rst point. The triangle does not have to be drawn.

altitude(point1, point2, point3)

Example:

altitude(A, B, C) draws a line passing through point A that is perpendicular to line BC.

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