Page 112 - Math Grade 12 (Advance)

PROEUS DARA

b1::1Hi5 T(O) = 120 r;Slg 120 = Ae-k(O) + 28

A= 92

··kl
T(t) = 92e + 28

3
80 = 92e -k( ) + 28
-3k 52 13
e = 92 = 23
13
-3k = In- 'i5 k = !1 11 = 0.19
23 "'" 3 n23

91
30 = 92e -O.l + 28
91
e -O.I = 3_ = 0 02173
92 .
-0.19t = ln(0.02173) = -3.829
t = 20 8l g 9 ~ 8l g '1

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N(t+ 1)-N(t) = O.IN(t)

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