2013-05-30
1
ㅜㄐ Პᯟᦒㆰӻ
ᵢㄖ䠃⛯φᵢㄖ䠃⛯φ
⨼䀙ᲤᯥᦘⲺ⨼ૂᙝ䍞χ
㜳䇗㇍ᲤᯥᦘᦘȾ
֒ѐφ
13.9P
13.12P
13.13P
13.59P
Pierre Simon Laplace
(1749-1827),
Პᯟ
a
renc
as
ronomer an
ma
ema
c
an,
first presented the transform that bears
his name
Laplace transform
and its
applications to differential equations in
1779.
12.1
Ⲵᇊѹ
䙐䗽〥࠼ᦘሼᰬต࠳ᮦᦘѰ仇ต࠳ᮦθԄ㙂
ሼᰬตⲺᗤ࠼ᯯぁѰ仇ต࠳ᮦⲺԙᮦᯯぁȾ
F(s)=
[f(t)]
j
s
tt
sF
de)()(
0
de)()( ttfsF
ts
j
j
de)(
j2
1
)(
c
c
ts
ssFtf
12.2
u(t)
0 , t 0
u(t)
1 , t 0
1
u(t)
Ku(t)
K
0
t
(ut a)
1
a
(
ut a)
K
0
t
(ua t)
1
a
(
ua t)
K
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