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{
~—~T—~-3<¢-----~Mu)-~-s]
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.
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f.)
codi-—->
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i
a
5
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=
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on
uo
dv
Co
i
ey
A
4
UPTAKE
|
0
CONTENT
t, TIMe
Differentiating Equation 1
dq(t)
_
at
= Uc)
r (0)
_
+
t
(apy det
= 1) dt
s
( Utt)
°
ot
By definition
r(t -1t) =R (t - 1) est ~ Tt).
s
s
Therefore
dq(t) y,
ae
UCt) +
t
:
utr)
°
dQ (t - Tt)
s
dt
ei t-t)
THAg
(t)
(3)