Hp 49g+ User Manual download pdf (Page 403)

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if in RPN mode). Then, press @ERASE @DRAW. Press @CANCL to return to the PLOT,

PLOT WINDOW, or PLOT SETUP screen. Press $, or L@@@OK@@@, to return

to normal calculator display.

Generating a table for parametric equations

In an earlier example we generated a table of values (X,Y) for an expression

of the form Y=f(X), i.e., a Function

type of graph. In this section, we present

the procedure for generating a table corresponding to a parametric plot. For

this purpose, we’ll take advantage of the parametric equations defined in the

example above.

• First, let’s access the TABLE SETUP window by pressing „õ,

simultaneously if in RPN mode. For the independent variable change

the

Starting value to 0.0, and the Step value to 0.1. Press @@@OK@@@.

• Generate the table by pressing, simultaneously if in RPN mode,

„ö. The resulting table has three columns representing the

parameter t, and the coordinates of the corresponding points. For

this table the coordinates are labeled X1 and Y1.

• Use the arrow keys, š™—˜, to move about the table.

• Press $ to return to normal calculator display.

This procedure for creating a table corresponding to the current type of plot

can be applied to other plot types.

Plotting the solution to simple differential equations

The plot of a simple differential equation can be obtained by selecting Diff

Eq in the TYPE field of the PLOT SETUP environment as follows: suppose that

we want to plot x(t) from the differential equation dx/dt = exp(-t

), with initial

conditions: x = 0 at t = 0. The calculator allows for the plotting of the solution

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Hp 49g+ User Manual Page 403

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