Plotting an expression of the form y = f(x)

As an example, let's plot the function,

 

 

 

f (x) =

1

exp(x 2

)

 

 

 

 

 

 

 

 

 

 

π

 

2

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

First, enter the PLOT SETUP environment by pressing,

. Make

sure that the option Function is selected as the TYPE, and that

‘X’ is

selected as the independent variable (INDEP).

 

Press

to

return to normal calculator display. The PLOT SET UP window should

look similar to this:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enter the PLOT environment by pressing

 

 

(press them

 

simultaneously if in RPN mode). Press

„ñ

 

 

 

 

 

to get you into the

 

equation writer. You will be prompted to fill the right-hand side of an

equation Y1(x) = . Type the function to be plotted so that the

 

Equation Writer shows the following:

 

 

 

 

 

„ôL@@@OK@@@

Press

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to return to the PLOT SETUP window.

The expression

‘Y1(X) = EXP(-X^2/2)/(2*π )’ will be highlighted. Press

to

 

`

 

 

 

 

 

 

 

 

 

 

„òL@@@OK@@@

return to normal calculator display.

 

 

 

 

 

 

 

Enter the PLOT WINDOW environment by entering

 

(press

them simultaneously if in RPN mode).

Use a range of –4 to 4

for H-

 

 

 

￿

 

 

@ADD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 10-2

Page 129
Image 129
HP 49g manual Plotting an expression of the form y = fx, As an example, lets plot the function