Sharp EL-9900 EL9900 Operation Manual - Page 97

Graphing Parametric Equations

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GRAPHING PARAMETRIC EQUATIONS Steps for graphing a parametric function: 1. Turn the calculator on and press 2ndF SET UP E (COORD) 2 (Param) to change to parametric mode. Press 2ndF QUIT to exit the SET UP menu. 2. Make sure calculator is set to display rectangular coordinates when tracing by pressing 2ndF FORMAT F (CURSOR) 1 (RectCoord). Press 2ndF QUIT to exit the FORMAT menu. 3. To enter the parametric function X1T = 2(cos T)3, Y1T = 2(sin T)3, press Y= CL 2 ( cos X/θ/T/n ) ab 3 ENTER CL 2 ( sin X/θ/T/n ) ab 3 ENTER . Notice, when in parametric mode the X/θ/T/n key provides a T for equation entry. 4. Now, graph the parametric function in the Decimal viewing window by pressing ZOOM A (ZOOM) 7 (Dec). 5. Press TRACE and notice the expression and T values now appear on the range screen. 22 Advanced Keyboard/CALCULUS USING THE SHARP EL-9900 Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.

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22
Advanced Keyboard/CALCULUS USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation.
Permission is granted to photocopy for educational use only.
Steps for graphing a parametric function:
1.
Turn the calculator on and press
2ndF
SET UP
E
(COORD)
2
(Param)
to change to parametric mode.
Press
2ndF
QUIT
to exit the SET UP menu.
2.
Make sure calculator is set to display rectangular coordinates when tracing
by pressing 2ndF
FORMAT
F
(CURSOR)
1
(RectCoord)
.
Press
2ndF
QUIT
to exit the FORMAT menu.
3.
To enter the parametric function X1T = 2(cos T)
3
, Y1T = 2(sin T)
3
, press
Y=
CL
2
(
cos
X/
θ
/T/
n
)
a
b
3
ENTER
CL
2
(
sin
X/
θ
/T/
n
)
a
b
3
ENTER
.
Notice, when in parametric mode the
X/
θ
/T/
n
key provides a T for equation entry.
4.
Now, graph the parametric function in the Decimal viewing window by
pressing
ZOOM
A
(ZOOM)
7
(Dec)
.
5.
Press TRACE and notice the expression and T values now appear on the
range screen.
GRAPHING PARAMETRIC EQUATIONS