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7
Advanced Keyboard/PROGRAMMING USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
1. Program the calculator to graph a conic.
2. Create a new program with the name CONICGRA. Enter the following
program and remember to press ENTER at the end of each line. If you
make a mistake, use the calculator’s editing features to correct the error.
3. Enter the following program:
Input A PRGM A 3 ALPHA A ENTER
Input B PRGM A 3 ALPHA B ENTER
Input C PRGM A 3 ALPHA C ENTER
Input D PRGM A 3 ALPHA D ENTER
Input E PRGM A 3 ALPHA E ENTER
Input F PRGM A 3 ALPHA F ENTER
If C=0 PRGM B 0 3 ALPHA C ALPHA
Goto A = 0 PRGM B 0 2 ALPHA A ENTER
“(-(B×X+E)+ PRGM A 2 ( (-) ( ALPHA
√((B×X+E)
2
–B × X/θ/T/n + ALPHA E ) +
4C(A×X
2
+ 2ndF √ ( ( ALPHA B × X/θ/T/n
DX+F)))÷ + ALPHA B × X/θ/T/n + ALPHA E
(2C)”⇒Y1 ) x
2
– 4 ALPHA C ( ALPHA A
× X/θ/T/n x
2
+ ALPHA D X/θ/T/n +
ALPHA F ) ) ) ÷ ( 2 ALPHA
C ) PRGM A 2 STO 2ndF VARS
A ENTER A 1 ENTER
“(-(B×X+E)– PRGM A 2 ( (-) ( ALPHA
√((B×X+E)
2
–B × X/θ/T/n + ALPHA E ) –
4C(A×X
2
+ 2ndF √ ( ( ALPHA B × X/θ/T/n
DX+F)))÷ + ALPHA E ) x
2
– 4 ALPHA C
(2C)”⇒Y2 ( ALPHA A × X/θ/T/n x
2
+ ALPHA
D X/θ/T/n + ALPHA F ) ) ) ÷
( 2 ALPHA C ) PRGM A
2 STO 2ndF VARS A ENTER A 2 ENTER
GRAPHING CONICS
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