2019
Mathematics
JAMB
If S = (4t + 3)(t - 2), find ds/dt when t = 5 secs.
A.
50 units per sec
B.
35 units per sec
C.
22 units per sec
D.
13 units per sec
Correct Answer: 35 units per sec
Explanation
s=(4t+3)(t−2) ds/dt=(4t+3)(1)+(t−2)(4) = 4t+3+4t−8 = 8t - 5 ds/dt(t=5secs)=8(5)−5 = 40 - 5 = 35 units per sec
s=(4t+3)(t−2) ds/dt=(4t+3)(1)+(t−2)(4) = 4t+3+4t−8 = 8t - 5 ds/dt(t=5secs)=8(5)−5 = 40 - 5 = 35 units per secTHIS WEEK's
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