Mathematics 1 Deneme Sınavı Sorusu #1357102

A car moves along a road in such a way that its position at time t is f(t) = t3 + t2 + t (metre). What is the average velocity over the interval [1, 5] equal to?


38

38,5

39

39,5

40


Yanıt Açıklaması:

For the car given, t1=1 and t2=5. The values of f at these points are f(t1) = f(1) = 13+12+1 = 3,
f(t2) = f(5) = 53 + 52 +5 = 155. So, the average velocity is equal to (155 - 1)/(5 - 1) = 154/4 = 38,5 metres/seconds. The answer is B.

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