.
dx dt
x x
dx dx x x
x x x x
dx dt
x x
dx dt
x x
dx dx x x
x x x x
dx dt
x x
dx dt
x x
dx dx x x
x x x x
dx dt
x x
x x t C
dx dt
x x
dx dx x x
x x x x
dx dt
x x
dx dx x x
x x x x
P P P k P k
P P dP dt
P
k
P P P k P
p
k
p
k
P
k k
dP P k P
dt P
P kP dP k dt
P
kt C
PPC kt PC
k P k P
dP k k P P kP
dt k k k
PC kt P P
dP kP
dt kP
P t kP t t
P k
D
kP
B P
MD
t t
P t e e P t M
t
D
kP
dP b
aP P
dt a Mb
a
B aP D aP bP P
D P b
M
B aP a
D
bP
B
a k
P
B
kP
D P
MB
t t
P t e e
P t M t
dP kP P
dt
dP k dt
P P
M
PP
kk
x x x x x
x x
M
N t kN N N
N N kN P
M
t
P P
P
t
P
t
dP P P
dt
P t P P
dP P P P P
dt
dP kP P
dt
P t P P k
dP P P P P
dt
dx x x x x
dt
x P
t
xCe
x
dP P P P P
dt
k P P
t
dP e dt
P
t
P e C P P C P
P P t
P t e P
t
P t P e
P P
e
dP k dt
P M P
dP dP P M P
P M P M P M P M
dP k dt
P P M
dP dP P M P
P P M M P M P M
P kP M P
dP dP
PdP dt
k
P t M
k
P t M
analytically
M
kMt
kMt kMt kMt
M P M P e MP M M P
MP
MP M P e P M P e P e M
k
t
P t
kM
x e P P P
P M P
xP M P
P M P
xP M P
P P M P P P M P P P P M P P P M P P P
P P P P P PP
MP P P
k M
dP k b t dt
P
b
P kt t C
P P C P