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⎧
1
−
b
1
0
≤
x
≤
1
;
⎪
a
⎪
⎪
1
b
1
−
b
b
()
μ
x
=
a
x
+
a
3
,
1
<
x
≤
−
3
;
⎨
1
1
1
a
a
a
⎪
3
1
3
b
⎪
3
0
−
<
x
≤
1
⎪
a
⎩
3
1
−
b
⎧
0
0
≤
x
≤
1
;
⎪
a
⎪
⎪
1
b
1
−
b
b
3
1
3
1
−
a
x
−
a
,
<
x
≤
−
;
⎪
1
1
a
a
a
()
μ
x
=
3
1
3
⎨
b
1
−
b
2
⎪
⎪
1
−
a
x
−
b
,
−
3
<
x
≤
3
;
3
3
a
a
3
3
⎪
⎪
1
−
b
0
3
<
x
≤
1
.
a
⎩
3
()
(
)
y
0
≤
1
If function
y
=
a
x
+
b
satisfies the conditions:
;
y
−
b
/
a
<
0
, it is
3
3
1
1
b
, and
a
is obtained from a normal equation of a
corresponding optimization problem. Membership functions look like
supposed that
1
1
1
⎧
a
x
+
1
0
≤
x
≤
−
;
⎪
⎪
⎨
1
a
()
⎪
⎪
⎩
μ
x
=
1
1
1
0
−
<
x
≤
1
a
1
1
⎧
−
a
x
,
0
≤
x
≤
−
;
⎪
1
a
⎪
1
1
b
⎪
1
−
<
x
≤
−
3
;
⎪
a
a
()
μ
x
=
1
3
⎨
2
b
1
−
b
⎪
1
−
a
x
−
b
,
−
3
<
x
≤
3
;
3
3
a
a
⎪
3
3
⎪
1
−
b
3
0
<
x
≤
1
⎪
a
⎩
3
()
1
(
)
y
=
a
x
+
b
If function
satisfies the conditions:
y
0
≤
;
y
−
b
/
a
≥
0
, it is
1
1
3
3
(
)
(
)
y
−
b
/
a
=
−
a
b
/
a
+
b
=
0
a
=
a
/
b
b
=
1
supposed that
;
;
. Then
3
3
1
3
3
1
1
3
3
1