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18
Advanced Keyboard/PROGRAMMING USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
A⇒E ALPHA A STO ALPHA E ENTER
B⇒F ALPHA B STO ALPHA F ENTER
Line(C,D,E,F) 2ndF DRAW A 2 ALPHA C ,
ALPHA D , ALPHA E , ALPHA F
)
ENTER
X+1⇒X X/q/T/n + 1 STO X/θ/T/n ENTER
If X<Xmax PRGM B 0 3 X/θ/T/n MATH F
Goto A 5 2ndF VARS B ENTER A 2
PRGM B 0 2 ALPHA A ENTER
J⇒X ALPHA J STO X/θ/T/n ENTER
Y+1⇒Y ALPHA Y + 1 STO ALPHA Y
ENTER
If Y<Ymax PRGM B 0 3 ALPHA Y MATH
Goto A F 5 2ndF VARS B ENTER A 5
PRGM B 0 2 ALPHA A ENTER
End PRGM A 6 ENTER
4. Press Y= and CL to clear the Y1 prompt. Press and CL to clear
additional prompts. The differential equation y = (sin x)/x has been entered
into the program at lines twelve and sixteen. Enter a different differential by
editing the program at lines twelve and sixteen. Press ZOOM A 7 to
set the window for viewing the slope field, however, different viewing
windows can be used. Execute the SFIELD program by pressing PRGM A
(EXEC) and select SFIELD. When the program is done, press GRAPH .
SLOPE FIELDS (continued)
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