Pythagorean triples – Sharp EL-9900 User Manual
Page 51
14
Basic 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 find Pythagorean triples. Pythagorean triples are
three numbers x, y, and z that satisfy x
2
+ y
2
= z
2
.
2.
Create a new program with the name PYTHAG. 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 using the Advanced Keyboard:
Input N
PRGM A 3 ALPHA N ENTER
2
⇒J
2
STO ALPHA
J ENTER
1
⇒K
1
STO
ALPHA K ENTER
Label A
PRGM B 0 1 ALPHA A ENTER
If
√(J
2
+K
2
)
≠ipart
PRGM
B
0 3 2ndF
√
(
ALPHA J
(
√(J
2
+K
2
)) Goto B
x
2
+ ALPHA K
x
2
)
MATH F 2
MATH B 3 (
2ndF
√
(
ALPHA
J x
2
+ ALPHA
K x
2
)
)
PRGM B
0 2
ALPHA
B
ENTER
Print J
PRGM A
1 ALPHA J
ENTER
Print K
PRGM
A 1
ALPHA
K ENTER
√(J
2
+K
2
)
PRGM
A 1 2ndF
√
(
ALPHA
J
x
2
+ ALPHA
K x
2
)
ENTER
Print “
PRGM A 1 PRGM A
2 ENTER
Wait
PRGM A 4 ENTER
Label B
PRGM
B 0 1 ALPHA B ENTER
K+1
⇒K
ALPHA K + 1 STO ALPHA K ENTER
If K
≤(J–1)
PRGM
B
0 3 ALPHA K MATH
Goto A
F 6 ( ALPHA J –
1
)
PRGM B 0
2 ALPHA A ENTER
J+1
⇒J
ALPHA J
+
1 STO ALPHA J ENTER
1
⇒K
1
STO ALPHA K ENTER
If J
≤N
PRGM B 0 3 ALPHA J MATH
PYTHAGOREAN TRIPLES