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PROGRAM
LOG
ISTIC CURVE
PROGRAM NO.
2
T l T L E
P5
- B
-4
2. k
is
unknown:
y
i
Yi
'
Yi
Estimate value
1
~o
11
388
2
50
12
475
% = 10
3
67
13
591
• =
15
4
88
H
713
•
=18
~
119
15
845
+ =
19
6
146
16
983
7
182
17
1143
s
223
18
1256
9
273
19
1377
10
322
20
15
13
I Contents I
(Formulas)
I.
k is known:
"
y =
1 +
me
..
2n:
Natural logarithm
k
--
1
=
me
-··
y
k
fn
(- - l ) =
Pnm
ax
y
Putting Y =
2n
( ..!. - I
),
A =
2n
m, B =a, the following is obtained.
y
From the least square method, the results are:
I:r'IY
-
l:xl:x
Y
A=
n2
x'
-
(Ix)'
I
..
=
••
B=
nl:
xY -
IxIY
nl:x'
- (
Ir
)'
a=
- B
2 . k is unknown:
The reciprocal of
both
members in a curve formula is taken to write the
followin
g:
1 1 m
-
=-
+-
c
..
y k k
wi
th
1 1 m
Y
=-
,K
mT ,A = T .B
=c
-•
y . .
Y = K -
AB'
is obtained.
This
i~
determined by the method
of
a modified exponential curve, as
follows:
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not
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