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指出下列计算中的错误且说明理由:
(1)
(2)
,所以
(3)
A.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XnsxfVxmcmFje2R4fXsxK3heezJ9fT0tXGludF97LTF9XnsxfVxmcmFje2RcbGVm%0D%0AdCggXGZyYWN7MX17eH0gXHJpZ2h0KX17MStcbGVmdCggXGZyYWN7MX17eH0gXHJpZ2h0KV57Mn19%0D%0APS1cbGVmdFsgXGFyY3RhblxmcmFjezF9e3h9IFxyaWdodF1fey0xfV57MX09LVxmcmFje1xwaX17%0D%0AMn0%3D'
B.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XnsxfVxmcmFje2R4fXt4XnsyfSsxfVx1bmRlcmxpbmV7XHVuZGVybGluZXt4PVxm%0D%0AcmFjezF9e3R9fX0tXGludF97LTF9XnsxfVxmcmFje2R0fXt0XnsyfSsxfQ%3D%3D'
C.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XnsxfVxmcmFje2R4fXt4XnsyfSsxfT0w'
D.174.24.96:6088/Latex/latex.action?latex=XGludF97LVxpbmZ0eX1ee1xpbmZ0eX1cZnJhY3t4XnszfX17MSt4Xns0fX1keD1cbGltX3tiXHRv%0D%0AK1xpbmZ0eX1caW50X3stYn1ee2J9XGZyYWN7eF57M319ezEreF57NH19PTA%3D'
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11.求下列微分方程的通解或在给定条件下的特解:
(1)y″-6y'+13y=14
(2)y″-2y'-3y=2x+1
(3)y″+2y'-3y=e
2x
(4)y″-y'-2y=e
2x
(5)y″+4y=8sin2x
(6)y″-4y=4,y'|
x=0
=0,y|
x=0
=1
(7)y″+4y=8x,y'|
x=0
=4,y|
x=0
=0
(8)y″-5y'+6y=2ex,y'|
x=0
=1,y|
x=0
=1
A.求下列微分方程的通解或在给定条件下的特解:
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16.求下列差分方程的通解及特解:
(1)y
x+1
-5y
x
=3
(2)y
x+1
+y
x
=2
x
(y
0
=2)
(3)y
x+1
+4y
x
=2x
2
+x-1 (y
0
=1)
(4)
(y
0
=6,y
1
=3)
(5)y
x+2
-4y
x+1
+16y
x
=0 (y
0
=0,y
1
=1)
(6)y
x+2
-2y
x+1
+2y
x
=0 (y
0
=2,y
1
=2)
A.求下列差分方程的通解及特解:
B.174.24.96:6088/Latex/latex.action?latex=XGxlZnQoIHlfezB9PVxmcmFjezd9ezN9IFxyaWdodCk%3D'
C.174.24.96:6088/Latex/latex.action?latex=eV97eCsyfSszeV97eCsxfS1cZnJhY3s3fXs0fXlfe3h9PTk%3D'
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