172
Ca pít,u Ju
-1. Ecuaciolles
DifcrC'uciales Lineales
de SeguIldo Orden
1
J.
(.-2./'
cos
J./' -
('úr
SE'll
3.1'
+
(' - 'l.r
S('1l
J./'
El! los prohl<'lllas
10-49
resllrh-a
la ('('uadón difercllcial dada) por ('1 método
(\0
los
C(H'n Cif'IlI
('s
illd(' j
C'rllli llados
17 .
.11"
-
2.11'
+-.1/
=
10cos .1"
+
t:)SC' Il .l;
18.
y"
-
2.11'
+
17y
=
289./"
1-
9
I!J.
y"
+
8.11'
=
G4./'
21.
y"
+
4.11'
+
:3!J
=
4e-:
I
.,
+
18./'
+
15
22 . .11"
+
10y'
+
25.11
=
(2
+
6./')p- o.,·
2:3 . .11"
+
:3.11'
=
:36n·-
3 .,·
-
9,/ \.'
+
7
24 . y"
1-
Sy'
-1
Gy
=
10(1 - ./,),.-,-,.
25.
y"
+
2.11'
+
2.11
= I
+ ./'
26 . . '/'
+
y'
+
y
= (./'
-1-
./")e'
27.
y"
+
4.'1'
-
2.11
=
8scn 2x
28.
y"
+
.11
=
8
scn .,.
+
4
coS./'
+
I
29.
y"
+
y
=
4",
('OS.T
:30.
y"
+
y
=
2
sen
J
sen
2x
JI.
y"
+
!J'
=
('OS2
,1'
+
e,r
+
,[,'1.
32. y"
-
4.11'
+
5.11
=
e'r(sen ."
+
2cos ,")
:3:3.
y"
-
4.11'
+
4.11
=
4x
+
sen .c
+
sen 2,"
34. y"
+
2.11'
+
Y
=
1
+
2
cos
x
+
cos
21; -
sen
2x
:35.
y"
+
Gy'
+
9.11
=
6u- a ,
+
9
+
50
SCII .7;
36. y"
+
4.11'
+
4.11
=
2x
+
G
37. y"
-
y'
-
12.11
=
14e'-'
38. y"
-
2.11'
-
3.11
=
4e
X
-
9
1...,164,165,166,167,168,169,170,171,172,173 175,176,177,178,179,180,181,182,183,184,...252