Parametric Graphing - Sharp EL-9650 Operation Manual

CHAPTER 4

4. Parametric Graphing

The parameter graph mode can display graphs of defined equations (X = X(t), Y = Y(t))
using three parameters (variables). To display the calculated points, the calculator
increases the T interval of Tstep and executes calculation. When the parameter
coordinates are set, press
graph.
<Example>
Graph "X = 3 sin T - 2", "Y = 2 cos T".
1. Set parametric coordinates.
Press Ï
2. Input equations.
Press key to display screen to the right.
Input "3 sin T - 2" to "X1T" and "2 cos T" to "Y1T".
Press 3 s
* To change the graph size, reset the WINDOW value (see
page 104) or execute ZOOM (see page 100).
3. Plot graph.
Press to plot graph.
* In the CALC functions of the parametric coordinate system,
only Value (numeric value) is valid. Other functions, such as
Intsct, Minimum, etc., used in the rectangular coordinate system are not provided.
* All trigonometric functions within a function equation are calculated using the angle unit (Deg,
Rad or Grad) specified in the SET UP menu. Set angle unit system according to use.
to input T. You may draw up to 2 graphs in parameter
E 2.
- 2 ® 2 c ®.
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