HP 50G, Руководство пользователя

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Page 12-10
Graph of the exponential function
First, load the function exp(X), by pressing, simultaneously if in RPN mode, the
left-shift key
„
and the
ñ
(
V
) key to access the PLOT-FUNCTION
window. Press
@@DEL@@
to remove the function LN(X), if you didn’t delete Y1 as
suggested in the previous note. Press
@@ADD@!
and type
„¸~x`
to
enter EXP(X) and return to the PLOT-FUNCTION window. Press
L @@@OK@@@
to
return to normal calculator display.
Next, press, simultaneously if in RPN mode, the left-shift key
„
and the
ò
(
B
) key to produce the PLOT WINDOW - FUNCTION window. Change
the H-View values to read: H-View: -8 2
by using
8\ @@@OK@@ @ 2 @@@OK@@@
. Next, press
@AUTO
. After the vertical range is
calculated, press
@ERASE @DRAW
to plot the exponential function.
To add labels to the graph press
@EDIT L @)LABEL
. Press
@MENU
to remove the
menu labels, and get a full view of the graph. Press
LL @)PICT! @CANCL
to
return to the PLOT WINDOW – FUNCTION. Press
`
to return to normal
calculator display.
Next, press
‚ @@@X@@@
to see the contents of this variable. A value of 10.275 is
placed in the stack. This value is determined by our selection for the horizontal
display range. We selected a range between -1 and 10 for X. To produce
the graph, the calculator generates values between the range limits using a
constant increment, and storing the values generated, one at a time, in the
variable
@@@X@@@
as the graph is drawn. For the horizontal range ( –1,10), the
increment used seems to be 0.275. When the value of X becomes larger than
the maximum value in the range (in this case, when X = 10.275), the drawing
of the graph stops. The last value of X for the graphic under consideration is
kept in variable X. Delete X and Y1 before continuing.