M
l
i
m
x
c
1
2
(
x
-
c
)
=
∞
●
●
M
=
4
5
.
9
1
9
9
δ
1
=
0
.
1
4
7
5
7
1
δ
2
=
0
.
1
4
7
5
7
1
a
u
t
o
m
a
t
i
c
a
l
l
y
c
a
l
c
u
l
a
t
e
δ
v
a
l
u
e
s