I'm a little confused about how I do this question. Link to question here

The question specifies a speed-time function (v (t) = 10 + 5t-t ^ 2) and asks whether the shift should be determined with an overestimation U5 (determination of the overestimation with 5 rectangles). The confusing part, however, is that the question is that the speed is constant after every second interval. This confuses me because f (2) = 16 f (2.5) = 16.25 and f (3) = 16 and I don't know if I should use 16.25 for the overestimation.

Does the picture here exactly show what the overestimation would look like according to the question? or would touch the middle rectangle 16.25 f (2.5) as this is the largest number between the interval 2 and 3. The main co-fusion results from the wording of the question “You have to determine the displacement of the vehicle after 5 seconds by assuming that the speed of the vehicle is over constant

every one second time interval. & # 39;

Read the question carefully and tell me what you think the overrated U5 should be. For me it's either 76 units ^ 2 or 76.25 units ^ 2.

f (1) + f (2) + f (3) + f (3) + f (4) = 76

or

f (1) + f (2) + f (2.5) + f (3) + f (4) = 76.25