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centered at the origin (0,0), will extend from -2 to 2 in x, and from -√3 to √3
in y.
Notice that for the circle and the ellipse the region corresponding to the left
and right extremes of the curves are not plotted. This is the case with all
circles or ellipses plotted using
•
To see labels: @EDIT L@) L ABEL @MENU
•
To recover the menu: LL@) P ICT
•
To estimate the coordinates of the point of intersection, press the @(X,Y)@
menu key and move the cursor as close as possible to those points using
the arrow keys. The coordinates of the cursor are shown in the display.
For example, the left point of intersection is close to (-0.692, 1.67), while
the right intersection is near (1.89,0.5).
•
To recover the menu and return to the PLOT environment, press L@CANCL.
•
To return to normal calculator display, press L@@@OK@@@.
Parametric plots
Parametric plots in the plane are those plots whose coordinates are generated
through the system of equations x = x(t) and y = y(t), where t is known as the
parameter.
An example of such graph is the trajectory of a projectile, x(t) =
⋅COS θ
⋅t, y(t) = y
x
+ v
0
0
0
which involve constant values x
those parameters in variables.
directory called 'PROJM' for PROJectile Motion, and within that sub-directory
store the following variables: X0 = 0, Y0 = 10, V0 = 10 , θ0 = 30, and g =
9.806. Make sure that the calculator's angle measure is set to DEG. Next,
define the functions (use „à):
as the
Conic
TYPE
⋅sin θ
⋅t – ½⋅g⋅t
2
+ v
. To plot equations like these,
0
0
0
, and θ
, y
, v
, we need to store the values of
0
0
0
0
To develop this example, create a sub-
.
Page 12-23
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