1 2 3 4 5 (minutes) C(t) (ounces) 0 5.3 8.8 11.2 12.8 13.8 14.5 Hot water is dripping through a coffeemaker, filling a large cup with coffee. The amount of coffee in the cup at time 1, 0sis6, is given by a differentiable function C, where t is measured in minutes. Selected values of C(t), measured in ounces, are given in the table above. (a) Use the data in the table to approximate C'(3.5). Show the computations that lead to your answer, and indicate units of measure. (b) Is there a time t, 2 st5 4, at which C'(t) = 2 ? Justify your answer. (c) Use a midpoint sum with three subintervals of equal length indicated by the data in the table to approximate the value of C(t) dt. Using correct units, explain the meaning of Ct) dt in the context of the problem. (d) The amount of coffee in the cup, in ounces, is modeled by B(t) = 16 – 16e-041. Using this model, find the rate at which the amount of coffee in the cup is changing when t = 5.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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