Sharp EL-9900C User Manual page 91
Graphing calculator
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Also See for EL-9900C:
- Operation manual (284 pages) ,
- Specifications (2 pages) ,
- Bid specifications (1 page)
Table of Contents
TRAPEZOIDAL
APPROXIMATION OF AREA
A program for finding the trapezoidal approximation for an area.
Input N
Input A
Y1(A)⇒L
Input B
Y1(B)⇒R
0⇒Z
(B–A)÷N⇒W
A+W⇒X
Label LOOP
2Y1(X)+Z⇒Z
X+W⇒X
If X
LOOP
ClrT
Print "TRAP=
Print (W÷2)
(L+Z+R)
End
Execute like the rectangular program to find an approximate area of .83866.
Advanced Keyboard/CALCULUS USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
PRGM
A
3
ALPHA
PRGM
3
ALPHA
2ndF
VARS A
ENTER
ALPHA L
ENTER
PRGM
3
ALPHA
2ndF
VARS
ENTER
ENTER
0
STO
ALPHA
Z
(
ALPHA
B
–
ALPHA
W
ENTER
ALPHA
A
+
ALPHA W
PRGM
B
0
1
2ndF A-LOCK
ALPHA
ENTER
2 2ndF VARS ENTER 1 ( X/θ/T/n ) +
ALPHA
Z
ENTER
X/θ/T/n
+
ALPHA
PRGM
B 0
3
X/θ/T/n
PRGM 0
2 2ndF A-LOCK L
PRGM
C
1
ENTER
PRGM
A
1
PRGM 2
PRGM
2
ENTER
(
PRGM
1
ALPHA W
L +
ALPHA
Z
PRGM
6
ENTER
N
ENTER
A
ENTER
(
A
1
ALPHA
B
ENTER
(
1
ALPHA
ENTER
)
ALPHA
A
÷
STO X/θ/T/n
L
W
STO
X/θ/T/n
MATH
F
O
O
2ndF A-LOCK
)
(
÷
2
)
+
ALPHA R
16
)
A
STO
)
B
STO ALPHA R
ALPHA
N
STO
ENTER
O
O
P
ALPHA Z STO
ENTER
5
ALPHA B
P
ENTER
T
R
A
P =
ALPHA
ENTER
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