0
cos 100
3
u U t
π
π
= −
÷
!"#$%&'()*+,-
4
2.10
π
−
. /0$12'
-3%$%&)4"56$7*81-(,9-:#-';*$4"</2$=**>%*81-(,9-
:#-';*$4"
/
5cos 100
6
*#Eω*+
6
F$G-H!"ω$%BH8I*!"#$%&#;';*$*+JKLK
'M*NO/$%BHω$7*81-(,9-$,)-:#-';*$F$ωDω
PQ-*81-(,9-$
,)-:#-';*$F$ωDω
?
/$=*R-4"@
/
1 2
2
LC
ω + ω =
//
1 2
1
.
LC
ω ω =
//
1 2
2
LC
ω + ω =
/S/
1 2
1
.
LC
D<6*#E]^_`a b
[
D56*#E]^_`? /$O*Z*;-3%$%2'K*+-:c
/a6K?T / /deK / /d?K5 / S/f6 /
5#%
'%
*$*#
g
\
:h
i
$K*G
,B$*%
i
'!%
\
'jg*Gg \g/4%
'G
\
π
= π −
÷
/
u 2cos 100 t V
AC
3
π
= π +
÷
a @$#';*$F$G-$$$-V'JD66√TΩK*(,B$&*Y'L!")D6
k<
`?π. /
!"#?&';*$'($$OD66√?*#E66π/O
L
D56K,9-$%$$%$h
/mBn$L
/LD6KTeb /LD6K5fb/LD6KaTa/LD6K5fb
d@[(oN-8I*'M*!"#';-A#%B*$C&ENpD56q KD??6 /O:Q-o*$rE-F$
$$O-3%$%*Z**>%o;-:c≥55 /:#-'(*$Fs$1-%oE-4"@
/
100
1
E /
100
AB
π=
/wN*$r:\$%!GFO4"$8$%
$8--:c=*$1*>%*$R-4*$$%$%
3
2
π
/*!GFO*$r-:c"#E%Bv
RL
4\
*$$%
6
π
E#!h
g
/66 /?66
/T66 S/<66
6@$#';*$$8$7$!xK
π
=
6,0
L
K
π
=
−
4
10
@-
75,0
=
ϕ
/?66 /T66 S/<66
R
B
C
L
A
N
V
R
B
C
L
A
V
1
V
2
R
B
C
r, L
A
R
B
C
/ /6/ /
2
0
ω
π
I
/ S/
ω
0
2I
/
T@$#';*$$8$7$!x$(Fn-V''(:#-P%$&•c\:W$&K*(,BK)/U$
!"#A#%B*$C*+
D?56$7
[
D56!"
[
D?66/(Fn4"@
/(,B*Y'$&//(,B*+:WF$*F$G-/
/)/S/:W$&
<@[(,9-A#%B*$C*+*81-($,)-4"*+&EN 4"p$7
48I-z%O,*>%,B:#-$1-%'(•%*$F7F2|F$,9-PQ-F$G-4"@
/
2I
f
π
/
2I
f
/€*(,B*+
:W$&F$G-vO*+K$mBn$-:c:W$&*>%*(
,B!",-*>%)/
/*+:W$&b:D56
Ω
bD6
k<
`
π
. /*+:W$&b:Da6
Ω
bD6
k<
`?
π
.
/*+:W$&b:Da6
Ω
bD6
k<
`
π
. S/*+:W$&b:
a@[M*!"#o•#'(A#%B*$C D??6
2
E66
π
/o*$rE-F$!"#?
&P+-o$#Y'm@
S
!"
?
D
#
*#Eω^ϕ
?
C*„-
*+-:c=*$14"6K5
#
K$8-'(,9-%--Y'K*9'(,9-%-j-/%,9-"B4*$
$%$%'(-+*PQ-//
6
5
π
/ /
3
4
π
/ /
6
π
S/
3
2
π
/
?6@#;';*$A#%B*$C-V'*(,B'M*NO!X)/(4*$$%-3%c\$%&*(
,BE#!X*81-(,9-4":#-';*$4"π`T/$,)--3%$%&)PQ-
3
4&
D
1 2
.f f
??@#;';*$A#%B*$CJLK:#-+J4"PO:W/$%&';*$*+-:c$,)-F$G-
H!"&ENF$G-H/U$
J
D6
3
$7
L
D<6K
DT6/OC*$r$PO:W*$#…
J
D6$7…
L
!"…
*+-:c/afK?!"5Kf /5eKd!"T<Ka /deKT!"T?K< S/<5Ke!"adK
?T @[(oN-E•,)-$$OA#%B*$C*+-:c$,)-??6/OoE-F$$$O
!"#oF$G-$€$h55/†EN-3%$1-%oE-!"oM:#-'(*$Fs4"
/6K54&/ /?4&/ /
2
4&/ S/
3
4&
V
MA B
L