Casio fx-3650P Programming Guide

14
08 Approximate solutions to higher
order equations
(bisection method)
Let be a function continuous on the interval
, with and having opposite signs, so
that there must be at least one in with
. If we divide the interval into two,
must belong to one of the intervals. Thus by
comparing the signs of , and
we can half the interval in which we search.
Repeating this procedure will yield an approximate
solution of arbitrary accuracy.
Program
Ｌｂｌ １：？→ Ａ：？→ Ｂ：（ ）（ ）≧０
⇒ Ｇｏｔｏ １：（
）＞０⇒ Ｇｏｔｏ ２：Ｂ → Ｃ：Ａ → Ｂ：Ｃ →
Ａ：Ｌｂｌ ２：（Ａ ＋ Ｂ）÷２→ Ｘ：Ｘ
→ Ｙ：Ｙ ＞０⇒ Ｇｏｔｏ
３：Ｘ → Ｂ：Ｇｏｔｏ ２：Ｌｂｌ ３：Ｘ → Ａ：Ｇｏｔｏ ２ ＜ 126 STEP ＞
Execution Example:
Find solutions to the equation . (Solutions are and )
a
b
a+b
2
f
x()
ab[,]
f
a()
f
b()
cab[,]
fc() 0= c
f
a()f
ab+
2
-------------


,
f
b()
ON
MODE MODE MODE
1
PRGM
MODE
1
COMP
1
P1
Ａ
３
－２ Ａ
２
－２Ａ＋４
Ｂ
３
－２ Ｂ
２
－２Ｂ＋４
Ａ
３
－２ Ａ
２
－２Ａ＋４
Ｘ
３
－２ Ｘ
２
－２Ｘ＋４
x
3
2x
2
–2x–4+0=2± 2
Prog
1
S A
D R P1
P1
P2 P3 P4 G
1
EXE
1 5
EXE
Disp
S A
D R P1
P1
P2 P3 P4 G
EXE
Disp
S A
D R P1
P1
P2 P3 P4 G
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Casio fx-3650P Specifications

General

Type	Scientific
Form factor	Pocket
Housing material	Plastic
Digits	12 digits
Digit comma separator	Yes
Display number of lines	2 lines
Digit comma separator format	Standard (3 digits)
Battery type	LR44
Number of batteries supported	1

Weight and Dimensions

Weight	100 g
Dimensions (WxDxH)	78 x 157 x 12 mm