دليل المستخدم

A-37

 
m
1
 
m1 =
2c
– b +
b
2
– 4c
(
a – y
)
m
2
 
m2 =
2c
– b –
b
2
– 4c
(
a – y
)
n
 
n
= a + bx + cx
2
 
 
 
a
 
a =
n
Σy
i
– b
.
Σlnx
i
b
 
b =
n
.
Σ
(
ln
x
i
)
2
–
(
Σlnx
i
)
2
n
.
Σ
(
ln
x
i
)y
i
– Σlnx
i
.
Σy
i
r
 
r =
{n
.
Σ
(
ln
x
i
)
2
–
(
Σlnx
i
)
2
}{n
.
Σy
i
2
–
(
Σy
i
)
2
}
n
.
Σ
(
ln
x
i
)y
i
– Σlnx
i
.
Σy
i
m
 
m = e
y – a
b
n
 
n = a + blnx
e
 
 
 
a
 
a = exp
( )
n
Σ
lny
i
– b
.
Σx
i
b
 
b =
n
.
Σx
i
2
–
(
Σx
i
)
2
n
.
Σx
i
ln
y
i
– Σx
i
.
Σ
lny
i
r
 
r =
{n
.
Σx
i
2
–
(
Σx
i
)
2
}{n
.
Σ
(
ln
y
i
)
2
–
(
Σlny
i
)
2
}
n
.
Σx
i
ln
y
i
– Σx
i
.
Σ
lny
i
m
 
m =
b
lny – lna
n
 
n = ae
bx