Sharp EL-9900 - Manual (Page 140)

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