Parametric function – Turning Technologies ExamView User Manual
Page 136
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136
5
For each point defined, select a label style, point style, and label position.
6
For a polynomial defined by zeroes, enter a scale factor.
7
For a polynomial defined by critical points, enter a scale factor and a y-intercept.
8
For a polynomial defined by zeroes of the 2nd derivative, enter a scale factor, y-intercept, and the slope of the curve
at x = 0.
NOTE
Variables can be used as values for the points, the scale factor, the y-intercept, the slope at
x=0, anywhere in the function definitions or as values for the domain.
9
To display the polynomial only if a certain condition is met, enter the condition in the field following Display polynomial
(only if ).
10
Enter the domain for the polynomial. By default, x will range from -inf(infinity) to inf(infinity).
11
To change the drawing style for the polynomial, click the Pattern drop-down menu .
12
To change the color of the polynomial and the points, click the Color drop-down menu .
13
To change the color of the labels, click Font.
14
To change the style for the shaded region, click the Shading drop-down menu . If the relation is ”r;=”, the shading style
is not used.
15
Click Apply to view your changes in the editing window or click OK to record your changes and close the New
Polynomial window.
Parametric Function
Parametric equations provide a convenient way to represent curves on a cartesian graph. With a parametric equation, x and y
are both determined as a function of a third independent variable ( t ). The following graph shows x = f(t)= 4 * cos(t) and y = g(t)
= 4 * sin(t). The domain of the function is from 0 to 2 * pi.
1
Insert a Cartesian graph into a question, answer, matching
group, rationale, feedback, or narrative.To edit an existing
graph, double-click the graph or click Format from the menu bar
and select Format Graph.
2
Click the Functions tab, select Parametric from the drop-
down menu and click New.
3
Enter functions for x = f(t) and y = g(t) using t as the variable.
Use the same algorithmic syntax used to define variables.
4
Enter the domain of t. By default, t will range from –20 to +20.
NOTE
Variables can be used anywhere in the function
definition or as values for the domain.
Click the Add from List button next to the
function definitions to display a list of currently
defined variables, constants, and keywords.
5
To change the drawing style for the function, click the Pattern drop-down menu .
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