m
v
c
v
(
t
v
−
0
)
+
λ
Δ
m
j
=
m
j
c
j
(
0
−
t
j
)
m
v
c
v
(
t
v
−
0
)
+
λ
Δ
m
j
=
m
j
c
j
(
0
−
t
j
)
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