HP 48gII User Manual page 405

Y(t) = Y0 + V0*SIN(θ0)*t – 0.5*g*t^2
which will add the variables @@@Y@@@ and @@@X@@@ to the soft menu key labels.
To produce the graph itself, follow these steps:
• Press „ô, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
•
Change to
TYPE Parametric
• Press ˜ and type 'X(t) + i*Y(t)' @@@OK@@@ to define the parametric plot as
that of a complex variable. (The real and imaginary parts of the complex
variable correspond to the x- and y-coordinates of the curve.)
•
The cursor is now in the
change the independent variable to t.
• Press L@@@OK@@@ to return to normal calculator display.
• Press „ò, simultaneously if in RPN mode, to access the PLOT
window (in this case it will be called PLOT –PARAMETRIC window).
Instead of modifying the horizontal and vertical views first, as done for
other types of plot, we will set the lower and upper values of the
independent variable first as follows:
•
Select the
Indep Low
0@@@OK@@@. Then, change the value of
1@@@OK@@@ for the
Step
Note: Through these settings we are indicating that the parameter t will
take values of t = 0, 0.1, 0.2, ..., etc., until reaching the value of 2.0.
• Press @AUTO. This will generate automatic values of the H-View and V-View
ranges based on the values of the independent variable t and the
definitions of X(t) and Y(t) used. The result will be:
X(t) = X0 + V0*COS(θ0)*t
, by pressing @CHOOS ˜˜@@@OK@@@.
field. Press ³~„t @@@OK@@@ to
Indep
field by pressing ˜˜. Change this value to
to 2@@@OK@@@. Enter 0.
High
value (i.e., step = 0.1).
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