Sharp EL-9900 - Manual (Page 136)

3
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 perform the bisection method for approximating
the root of a polynomial.
2. Create a new program with the name BISECT. 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
A
⇒X
ALPHA A STO X/
θ/T/n ENTER
If Y1>0 PRGM B 0 3 2ndF VARS A ENTER
Goto A A 1 MATH F 3 0 PRGM B 0
2 ALPHA A ENTER
A
⇒N
ALPHA A STO ALPHA N ENTER
B
⇒P
ALPHA B STO ALPHA P ENTER
Goto B PRGM B 0 2 ALPHA B ENTER
Label A PRGM B 0 1 ALPHA A ENTER
A
⇒P
ALPHA A STO ALPHA P ENTER
B
⇒N
ALPHA B STO ALPHA N ENTER
Label B PRGM B 0 1 ALPHA B ENTER
(P+N)
÷
2
⇒X
( ALPHA P + ALPHA N )
÷ 2
STO X/
θ/T/n ENTER
Print X PRGM A 1 X/
θ/T/n ENTER
Wait PRGM A 4 ENTER
If Y1>0 PRGM B 0 3 2ndF VARS A ENTER
Goto C A 1 MATH F 3 0 PRGM B 0
2 ALPHA C ENTER
X
⇒N
X/
θ/T/n STO ALPHA N ENTER
Goto D PRGM B 0 2 ALPHA D ENTER
Label C PRGM B 0 1 ALPHA C ENTER
X
⇒P
X/
θ/T/n STO ALPHA P ENTER
Label D PRGM B 0 1 ALPHA D ENTER
THE BISECTION METHOD