土
2
^
be
y
'
16 x y
m
3
3
-
i
"
y
1
=
.
X
:
m
(
u
sk
,
,
+
3
y
mxm
'
3
-
(
+
C
,
2
m
"
=
mCr
) xm
17 ( M
-
-
' + 48 m
"
xm
)
2
(
m
s
-
1 )
xm
-
Smxm
+1
-
1
=
O
→
25
=
-,
:M
%
Y
y
C
2
x
Ʃ
+
K
=
y
Xi
3
4
=
m
(
(
ur
ut
-
) (
3
=
Y
"
16 m ( mt ) (
0
C3
x
巨
K
=
) xm
-1
0
Cr
-
'
=
xy
Ʃ
,
"
y
=
'
=
+
%
y
3
+
C
=
YD
xy
t3
,
4x
yn
☆
x
1
"
x
:
,
去
:C
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%
159
+
"
+
or
'
lee
m
xy
mxm
=
1 ) xm
-
O
y
,
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Y
4x
y
+ 48
"
=
∴
.
'
( 16 m
m
3
x
:
.
X
+
C
2
=
-
xi
s
+C
x
3
-
s
1
)
m
xom
-
2
"
,
"%
y
) xm
+
=
m
(U
3 mxm
-
-
1
3
) (r
xm
-
2
)
=
xm
-
3
4m
3
_
12 m
(
+
)|
m
-
3
=
-1 )
( 4m
2
-
8m
+③
一
4
,
'
y
"
4 y
+
β+
5y
+
=
let
"
+
p
"
tsy
96 k ,
y
y( o )
Y (δ )
y
=
"
90 k
(0 )
C.
=
=
C,
-
-
6+
-
2
+
C
+
C2
( λ+
yp
,
+
77 C 2- 36 C 3 +
=
0
λ=
0
-
,
2 +
9i
-
,
"
ke
t
,
yp =
K
.
tke
* t4
kixex 4 kiex t kex
96 k ,+ 901% ) ex
+
(
=
3
ka
,
4
8
=
-
13sxex
=
③
C3 ezxsinax + 3 xe
t
*
-
ex
13 4
3 ⑤
=
-
3
derxosax
-
t
9i
4 s kixex
.
+
-
xexe 2 ex
ex
=
2
(
-
-
9 C3
0
=
k . ( xextex )
=
K.
, excosqx
C2
)
4 λ+ 5
3 hiex
t
*
90 kxex
=
exx
exx
⑤
-
18
.
1
C.
=
6
,
=
3
)
+kex
kzex
3 ex) t
: Yp = 超 xex =
s 入)
+
=
yd
2
= kixe
'
'
13 s
=
t
)
= λexx ,
d
C3 e xsin 9x
t
.
k
k , ( xex +
=
90 k
.
{
4x
+
x
=
Y
"
0
=
ex ( Kx +
=
"
4 y
{
y, "
(
:
λ
exx
C
p
y
'
=入
t . excos 9 x
.
C
135 xex
=
Yh
,
4 x =+ 5
Yn
y
"
'
t
"5 y
y
特 enx
lty
y
4
' +
"
-
xe
x
691 - 6
ex
#
C
2
=
9
,C
3
=
t8
skiex
t
8 skex
Σ
。
5
ya exx
let
y
"
3
"
qy
-
9入
.
y
+ 2"
P
p
fi
,
27 λ
+
-
"
exx
入
= (
y
0
=
Ya
Gx
+
,
let
=
p
'
-
"
3
-
qy
"
=-
K,os 3
9
" +2
.
k
ny ' - 2
nY =
jp
,"
x
, siu3
( ank ,
(
=
{ 谈炎
K.
=
Y
y
j
C
=
3*
3
=
Y (o)
o
)
(C
{3
=
=
Gx
+
3e
=
"
y(
,
(
*
.
C-
Ʃ
3
3
+
.
i
-
+C 2
x
+C 3
-
x
:
Y
)
=
=
C
9
-
x
λ=
+(
3
3x
C2
+
2C
e
C
+
3
=
+
3
3
+ # )3
x出
β
.
c
λ=
→
0
2
2
+
( 三重根
3
)
2
出
+
C3 x
C
7
ωs
3X
2
→C
3
)I
+
O
:
-
3
出
81
K
(
cos3
.
x
+ 81Kasin3
x
-
81 ksin 3x
+
217 Kasin 3x
-
)
as3x
sin 3x
t
54 K.
t
E -2 n
R
s 4K:
)
2
+ 81 k
os 3x
,
t k
-
2
54
=
27
k
,
)
sin 3x
sin 3x
=
→
x+
272
3x
三
=
)
2
-
x
t
x
27
-
%) sin 3
[3 λ
+
27 ksin3
81 k.
,2
+
3 kzos
+
27 Kios 3x
-
34 )
x ( Cr
3
=
-
-
(C
e
)
0
:
=
s 5 u 3x
2 os3
K
-
Ʃ os 3X
-
+
x^ )
0
=
=
=
p
27
81 k
+
34 K, t
3λ
+
x
"
y (0
)e
C3 x
+
C+
-
31 k ,
-
y
sin3
27 K
=
81 Krcos 3X
=
) exx
27
-
exx
) ( λ≥ 6 λ+ 9)
sia 3λ
- 9
x
β
入
=
3x
t<
x
(λ
,
Yp
y
, Os3
K
)e
(3 x
+
y" d
,
. 9λ+ 27 λ
"
→
'
C
=
Pexx
:
λ
27
27
-
"y %
,
=
sin 3x
sin 3x
+
3e
+
3
3
x(
C
-
cos
3x
+ 2CX
)
+
ex
. 2C
3
+☆Os
3
x
- sin 3x
os 3x
一
子
卜
a(
os ( ω x
+ osin
)
( wx )
)
ot
F
或
=
F
9
.
[
estdx
:
de
lot
x
Fx
=
R
( ex ]
F
ay
-
σ
ex
*
-
=
aya
2
dy
=
.
e cos ω x
K" y ) =
|
u ( x, y
)
,
=
Y
:
+
=
u
dy
t
0
=
[
y)
k1 y )
→
(
dx
上
' ny |
K
excosXt yt
-
=
-
osinux)
oxowsinox dx t
Jexcos uxt
=
-
=
ex
:
ex ( oswxt
:
:
U
)
(0 6 )
C
=
5
C
+
0
++ 6
=
,
exoswxt
Y
=
+ c
C
→
0
=
#
" xy
x ( yi g ) dx
xj
-
=
丽
xdx
荊 前
u( 1 +
(
-
區為
,
=
式
y
=
) + in ( 1 - y )
∞
(u (
可
)
式
=
exx
器
3
.
=
dT
Tdi-
10 )
( T- ≈
K
kdt
J
=
J 00
+
cekt
Tsurrounding
T( )
ω
T( 1 )
T( t)
=
=
=
2∞
S
=
1 5
100
=
.
99 9
,
:
+ c
100
100
-
-
C
0
80
=
ek
.
eo
-
8
K ÷
.s
t
-
t ÷
6 s
.
33423
min
=
-
5