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Ch. 6 - Applications of Integration
Briggs - Calculus: Early Transcendentals 3rd Edition
Briggs3rd EditionCalculus: Early TranscendentalsISBN: 9780136847243Not the one you use?Change textbook
Chapter 6, Problem 6.1.45a

Oil production An oil refinery produces oil at a variable rate given by Q'(t) = <1x3 matrix>, where is measured in days and is measured in barrels. 


a. How many barrels are produced in the first 35 days?

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1
Identify the given rate of oil production function, which is the derivative of the quantity produced, denoted as \(Q'(t)\). This function represents the rate of change of barrels produced per day.
To find the total barrels produced in the first 35 days, set up the definite integral of the rate function \(Q'(t)\) from \(t=0\) to \(t=35\). This integral will give the total quantity produced over that time interval.
Write the integral as \(\int_0^{35} Q'(t) \, dt\). This represents the accumulation of production from day 0 to day 35.
Evaluate the integral by finding the antiderivative \(Q(t)\) of \(Q'(t)\), then compute \(Q(35) - Q(0)\) to find the total barrels produced in the first 35 days.
Interpret the result as the total number of barrels produced during the first 35 days, based on the integral of the production rate.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Derivative as a Rate of Change

The derivative Q'(t) represents the instantaneous rate of oil production at time t, measured in barrels per day. Understanding that the derivative gives the rate at which the quantity changes is essential to relate production rate to total production.
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Definite Integral for Accumulated Quantity

The total barrels produced over a time interval is found by integrating the rate function Q'(t) over that interval. The definite integral sums the instantaneous rates to give the accumulated quantity produced between two time points.
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Evaluating Definite Integrals

To find the total production in the first 35 days, you must evaluate the definite integral of Q'(t) from t=0 to t=35. This involves finding the antiderivative of Q'(t) and computing the difference of its values at the limits.
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