Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
10th Edition
ISBN: 9781285464640
Author: Soo T. Tan
Publisher: Brooks Cole
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Chapter 8.2, Problem 72E
To determine
Whether the statement “if
f x y f y x ( a , b ) f x x f y y ( a , b )
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Under certain conditions, the number of diseased cells N(t) at time t increases at a rate N'(t) = Aekt, where A is the rate of increase at time 0 (in cells per day) and k is a constant.
(a) Suppose A = 60, and at 3 days, the cells are growing at a rate of 180 per day. Find a formula for the number of cells after t days, given that 200 cells are present at t = 0.
(b) Use your answer from part (a) to find the number of cells present after 8 days.
(a) Find a formula for the number of cells, N(t), after t days.
N(t) =
(Round any numbers in exponents to five decimal places. Round all other numbers to the nearest tenth.)
The marginal revenue (in thousands of dollars) from the sale of x handheld gaming devices is given by the following function.
R'(x) = 4x (x² +26,000)
2
3
(a) Find the total revenue function if the revenue from 125 devices is $17,939.
(b) How many devices must be sold for a revenue of at least $50,000?
(a) The total revenue function is R(x) =
(Round to the nearest integer as needed.)
given that the revenue from 125 devices is $17,939.
Use substitution to find the indefinite integral.
S
2u
√u-4
-du
Describe the most appropriate substitution case and the values of u and du. Select the correct choice below and fill in the answer boxes within your choice.
A. Substitute u for the quantity in the numerator. Let v =
, so that dv = ( ) du.
B. Substitute u for the quantity under the root. Let v = u-4, so that dv = (1) du.
C. Substitute u for the quantity in the denominator. Let v =
Use the substitution to evaluate the integral.
so that dv=
'
(
du.
2u
-du=
√√u-4
Chapter 8 Solutions
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Ch. 8.1 - What is a function of two variables? Give an...Ch. 8.1 - If f is a function of two variables, what can you...Ch. 8.1 - Prob. 3CQCh. 8.1 - Prob. 1ECh. 8.1 - Let g(x, y) = 2x2 y2. Compute g(1, 2), g(2,1),...Ch. 8.1 - Prob. 3ECh. 8.1 - Prob. 4ECh. 8.1 - Prob. 5ECh. 8.1 - Prob. 6ECh. 8.1 - Let h(s, t) = s ln t t ln s. Compute h(1, e),...
Ch. 8.1 - Prob. 8ECh. 8.1 - Prob. 9ECh. 8.1 - Prob. 10ECh. 8.1 - Prob. 11ECh. 8.1 - Prob. 12ECh. 8.1 - In Exercises 11-18, find the domain of the...Ch. 8.1 - Prob. 14ECh. 8.1 - Prob. 15ECh. 8.1 - Prob. 16ECh. 8.1 - In Exercises 11-18, find the domain of the...Ch. 8.1 - Prob. 18ECh. 8.1 - In Exercises 19-24, sketch the level curves of the...Ch. 8.1 - Prob. 20ECh. 8.1 - Prob. 21ECh. 8.1 - Prob. 22ECh. 8.1 - In Exercises 19-24, sketch the level curves of the...Ch. 8.1 - Prob. 24ECh. 8.1 - Find an equation of the level curve of f (x, y) =...Ch. 8.1 - Prob. 26ECh. 8.1 - In Exercises 27 and 28, match the graph of the...Ch. 8.1 - Prob. 28ECh. 8.1 - Can two level curves of a function f of two...Ch. 8.1 - Prob. 30ECh. 8.1 - Prob. 31ECh. 8.1 - Prob. 32ECh. 8.1 - PRICE-TO-EARNINGS Ratio The current PE ratio...Ch. 8.1 - Prob. 34ECh. 8.1 - Prob. 35ECh. 8.1 - Prob. 36ECh. 8.1 - COST FUNCTION FOR A LOUDSPEAKER SYSTEM Acrosonic...Ch. 8.1 - REVENUE FUNCTION FOR ELECTRIC CARS Bell Motors...Ch. 8.1 - Prob. 39ECh. 8.1 - REVENUE FUNCTION FOR DESKS For the total revenue...Ch. 8.1 - Prob. 41ECh. 8.1 - Prob. 42ECh. 8.1 - Prob. 43ECh. 8.1 - SURFACE AREA OF A HUMAN BODY An empirical formula...Ch. 8.1 - Prob. 45ECh. 8.1 - Prob. 46ECh. 8.1 - PRODUCTION FUNCTION FOR A COUNTRY Suppose the...Ch. 8.1 - Prob. 48ECh. 8.1 - Prob. 49ECh. 8.1 - Prob. 50ECh. 8.1 - HOME MORTGAGES The monthly payment that amortizes...Ch. 8.1 - Prob. 52ECh. 8.1 - Prob. 53ECh. 8.1 - Prob. 54ECh. 8.1 - Prob. 55ECh. 8.1 - Prob. 56ECh. 8.1 - Prob. 57ECh. 8.1 - Prob. 58ECh. 8.1 - Prob. 59ECh. 8.1 - Prob. 60ECh. 8.1 - Prob. 61ECh. 8.1 - Prob. 62ECh. 8.1 - Prob. 63ECh. 8.1 - Prob. 64ECh. 8.2 - Prob. 1CQCh. 8.2 - Prob. 2CQCh. 8.2 - Prob. 3CQCh. 8.2 - Prob. 4CQCh. 8.2 - Prob. 1ECh. 8.2 - Prob. 2ECh. 8.2 - In Exercises 3-24, find the first partial...Ch. 8.2 - Prob. 4ECh. 8.2 - Prob. 5ECh. 8.2 - Prob. 6ECh. 8.2 - Prob. 7ECh. 8.2 - Prob. 8ECh. 8.2 - Prob. 9ECh. 8.2 - Prob. 10ECh. 8.2 - Prob. 11ECh. 8.2 - Prob. 12ECh. 8.2 - Prob. 13ECh. 8.2 - Prob. 14ECh. 8.2 - Prob. 15ECh. 8.2 - Prob. 16ECh. 8.2 - Prob. 17ECh. 8.2 - Prob. 18ECh. 8.2 - In Exercises 3-24, find the first partial...Ch. 8.2 - Prob. 20ECh. 8.2 - Prob. 21ECh. 8.2 - Prob. 22ECh. 8.2 - Prob. 23ECh. 8.2 - Prob. 24ECh. 8.2 - Prob. 25ECh. 8.2 - Prob. 26ECh. 8.2 - Prob. 27ECh. 8.2 - Prob. 28ECh. 8.2 - Prob. 29ECh. 8.2 - Prob. 30ECh. 8.2 - Prob. 31ECh. 8.2 - Prob. 32ECh. 8.2 - Prob. 33ECh. 8.2 - Prob. 34ECh. 8.2 - Prob. 35ECh. 8.2 - Prob. 36ECh. 8.2 - Prob. 37ECh. 8.2 - Prob. 38ECh. 8.2 - Prob. 39ECh. 8.2 - Prob. 40ECh. 8.2 - Prob. 41ECh. 8.2 - Prob. 42ECh. 8.2 - Prob. 43ECh. 8.2 - Prob. 44ECh. 8.2 - Prob. 45ECh. 8.2 - Prob. 46ECh. 8.2 - Land Prices The rectangular region R shown in the...Ch. 8.2 - Prob. 48ECh. 8.2 - Prob. 49ECh. 8.2 - Prob. 50ECh. 8.2 - Prob. 51ECh. 8.2 - Surface area of a human body The formula S =...Ch. 8.2 - Wind Chill Factor A formula used by meteorologists...Ch. 8.2 - Prob. 55ECh. 8.2 - Prob. 56ECh. 8.2 - Complementary and Substitute Commodities In a...Ch. 8.2 - Complementary and Substitute commodities In a...Ch. 8.2 - Prob. 59ECh. 8.2 - Prob. 60ECh. 8.2 - Prob. 61ECh. 8.2 - Prob. 62ECh. 8.2 - According to the ideal gas law, the volume V (in...Ch. 8.2 - Kinetic Energy of a Body The kinetic energy ODYK...Ch. 8.2 - Prob. 66ECh. 8.2 - Prob. 67ECh. 8.2 - Prob. 68ECh. 8.2 - Prob. 69ECh. 8.2 - Prob. 70ECh. 8.2 - Prob. 72ECh. 8.2 - Prob. 1TECh. 8.2 - Prob. 2TECh. 8.2 - Prob. 3TECh. 8.2 - Prob. 4TECh. 8.2 - Prob. 5TECh. 8.2 - Prob. 6TECh. 8.3 - Prob. 1CQCh. 8.3 - Prob. 2CQCh. 8.3 - Prob. 3CQCh. 8.3 - Prob. 4CQCh. 8.3 - In Exercises 1-20, find the critical point(s) of...Ch. 8.3 - Prob. 2ECh. 8.3 - In Exercises 1-20, find the critical point(s) of...Ch. 8.3 - Prob. 4ECh. 8.3 - Prob. 5ECh. 8.3 - Prob. 6ECh. 8.3 - Prob. 7ECh. 8.3 - Prob. 8ECh. 8.3 - Prob. 9ECh. 8.3 - In Exercises 1-20, find the critical point(s) of...Ch. 8.3 - Prob. 11ECh. 8.3 - Prob. 12ECh. 8.3 - Prob. 13ECh. 8.3 - Prob. 14ECh. 8.3 - Prob. 15ECh. 8.3 - Prob. 16ECh. 8.3 - Prob. 17ECh. 8.3 - Prob. 18ECh. 8.3 - Prob. 19ECh. 8.3 - Prob. 20ECh. 8.3 - Maximization Profit The total weekly revenue (in...Ch. 8.3 - Maximizing Profit The total daily revenue (in...Ch. 8.3 - Prob. 23ECh. 8.3 - Maximizing Profit CG Imports imports two brands of...Ch. 8.3 - Maximizing Revenue The management of Cal...Ch. 8.3 - Maximizing Profit Johnsons Household Products has...Ch. 8.3 - Maximizing Profit Johnsons Household Products has...Ch. 8.3 - Prob. 28ECh. 8.3 - Prob. 29ECh. 8.3 - Parcel Post Regulators Postal regulations specify...Ch. 8.3 - Packaging An open rectangular box having a volume...Ch. 8.3 - Prob. 32ECh. 8.3 - Prob. 33ECh. 8.3 - Prob. 34ECh. 8.3 - Prob. 35ECh. 8.3 - Prob. 36ECh. 8.3 - Prob. 37ECh. 8.3 - Prob. 38ECh. 8.3 - Prob. 39ECh. 8.3 - Prob. 40ECh. 8.3 - Prob. 41ECh. 8.3 - Prob. 42ECh. 8.4 - Prob. 1CQCh. 8.4 - Prob. 2CQCh. 8.4 - Prob. 4CQCh. 8.4 - Prob. 1ECh. 8.4 - Prob. 2ECh. 8.4 - Prob. 3ECh. 8.4 - Prob. 4ECh. 8.4 - Prob. 5ECh. 8.4 - Prob. 6ECh. 8.4 - Prob. 7ECh. 8.4 - Prob. 8ECh. 8.4 - Prob. 9ECh. 8.4 - Prob. 10ECh. 8.4 - Facebook Users End-of-year data for the number of...Ch. 8.4 - E-Book Audience The number of adults (in millions)...Ch. 8.4 - Prob. 13ECh. 8.4 - Prob. 14ECh. 8.4 - Prob. 15ECh. 8.4 - Prob. 16ECh. 8.4 - Prob. 17ECh. 8.4 - Prob. 18ECh. 8.4 - Prob. 19ECh. 8.4 - Prob. 20ECh. 8.4 - Prob. 21ECh. 8.4 - Prob. 22ECh. 8.4 - Prob. 23ECh. 8.4 - Prob. 24ECh. 8.4 - Prob. 25ECh. 8.4 - Prob. 26ECh. 8.4 - Prob. 27ECh. 8.4 - Prob. 29ECh. 8.4 - Prob. 30ECh. 8.4 - Prob. 1TECh. 8.4 - Prob. 2TECh. 8.4 - Prob. 3TECh. 8.4 - Prob. 4TECh. 8.4 - Prob. 5TECh. 8.4 - Prob. 6TECh. 8.4 - Prob. 7TECh. 8.4 - Prob. 8TECh. 8.4 - Prob. 9TECh. 8.5 - Prob. 1CQCh. 8.5 - Prob. 2CQCh. 8.5 - Prob. 1ECh. 8.5 - In Exercises 1-16. use the method of Lagrange...Ch. 8.5 - Prob. 3ECh. 8.5 - Prob. 4ECh. 8.5 - Prob. 5ECh. 8.5 - Prob. 6ECh. 8.5 - Prob. 7ECh. 8.5 - Prob. 8ECh. 8.5 - Prob. 9ECh. 8.5 - Prob. 10ECh. 8.5 - Prob. 11ECh. 8.5 - Prob. 12ECh. 8.5 - Prob. 13ECh. 8.5 - Prob. 14ECh. 8.5 - In Exercises 1-16. use the method of Lagrange...Ch. 8.5 - Prob. 16ECh. 8.5 - Prob. 17ECh. 8.5 - Maximizing Profit The total daily profit (in...Ch. 8.5 - Minimizing Construction Costs The management of...Ch. 8.5 - Prob. 20ECh. 8.5 - Packaging Find the dimensions of an open...Ch. 8.5 - Maximizing Profit The Ace Novelty company produces...Ch. 8.5 - Prob. 23ECh. 8.5 - Parcel Post Regulations Postal regulations specify...Ch. 8.5 - Minimizing Container Costs The Betty Moore Company...Ch. 8.5 - Minimizing Construction Costs An open rectangular...Ch. 8.5 - Prob. 27ECh. 8.5 - Prob. 28ECh. 8.5 - Prob. 29ECh. 8.5 - Prob. 30ECh. 8.5 - Maximizing Production Suppose a company can...Ch. 8.5 - Prob. 33ECh. 8.5 - Prob. 34ECh. 8.5 - Prob. 36ECh. 8.5 - Prob. 38ECh. 8.5 - In Exercises 39-42, determine whether the...Ch. 8.5 - Prob. 40ECh. 8.5 - Prob. 41ECh. 8.5 - Prob. 42ECh. 8.6 - Prob. 1CQCh. 8.6 - Prob. 2CQCh. 8.6 - Prob. 3CQCh. 8.6 - Prob. 4CQCh. 8.6 - Prob. 5CQCh. 8.6 - Prob. 1ECh. 8.6 - Prob. 2ECh. 8.6 - Prob. 3ECh. 8.6 - Prob. 4ECh. 8.6 - Prob. 5ECh. 8.6 - In Exercises 1-25. evaluate the double integral...Ch. 8.6 - Prob. 7ECh. 8.6 - Prob. 8ECh. 8.6 - Prob. 9ECh. 8.6 - Prob. 10ECh. 8.6 - Prob. 11ECh. 8.6 - Prob. 12ECh. 8.6 - Prob. 13ECh. 8.6 - Prob. 14ECh. 8.6 - Prob. 15ECh. 8.6 - Prob. 16ECh. 8.6 - Prob. 17ECh. 8.6 - Prob. 18ECh. 8.6 - Prob. 19ECh. 8.6 - Prob. 20ECh. 8.6 - Prob. 21ECh. 8.6 - Prob. 22ECh. 8.6 - Prob. 23ECh. 8.6 - Prob. 24ECh. 8.6 - Prob. 25ECh. 8.6 - Prob. 26ECh. 8.6 - Prob. 27ECh. 8.6 - In Exercises 26-33, use a double integral to find...Ch. 8.6 - In Exercises 26-33, use a double integral to find...Ch. 8.6 - Prob. 30ECh. 8.6 - Prob. 31ECh. 8.6 - In Exercises 26-33, use a double integral to find...Ch. 8.6 - Prob. 33ECh. 8.6 - Prob. 34ECh. 8.6 - Prob. 35ECh. 8.6 - Prob. 36ECh. 8.6 - Prob. 37ECh. 8.6 - Prob. 38ECh. 8.6 - Prob. 39ECh. 8.6 - Prob. 40ECh. 8.6 - Prob. 41ECh. 8.6 - Prob. 42ECh. 8.6 - Prob. 43ECh. 8.6 - In Exercises 42-47, find the average value of the...Ch. 8.6 - Prob. 45ECh. 8.6 - Prob. 46ECh. 8.6 - Prob. 47ECh. 8.6 - Prob. 48ECh. 8.6 - Prob. 49ECh. 8.6 - Population Density Of A City The population...Ch. 8.6 - Prob. 51ECh. 8.6 - Prob. 52ECh. 8.6 - Prob. 53ECh. 8.6 - Prob. 54ECh. 8.6 - Prob. 55ECh. 8.6 - Prob. 56ECh. 8 - Fill in the blanks. 1. The domain of a function f...Ch. 8 - Prob. 2CRQCh. 8 - Prob. 3CRQCh. 8 - Prob. 4CRQCh. 8 - Fill in the blanks. 5. The partial derivative fx...Ch. 8 - Prob. 6CRQCh. 8 - Prob. 7CRQCh. 8 - Prob. 8CRQCh. 8 - Prob. 9CRQCh. 8 - Prob. 10CRQCh. 8 - Prob. 11CRQCh. 8 - Prob. 12CRQCh. 8 - Prob. 1RECh. 8 - Prob. 2RECh. 8 - Prob. 3RECh. 8 - Prob. 4RECh. 8 - Prob. 5RECh. 8 - Prob. 6RECh. 8 - Prob. 7RECh. 8 - Prob. 8RECh. 8 - Prob. 9RECh. 8 - Prob. 10RECh. 8 - Prob. 11RECh. 8 - Prob. 12RECh. 8 - Prob. 13RECh. 8 - Prob. 14RECh. 8 - Prob. 15RECh. 8 - Prob. 16RECh. 8 - Prob. 17RECh. 8 - Prob. 18RECh. 8 - Prob. 19RECh. 8 - Prob. 20RECh. 8 - Prob. 21RECh. 8 - Prob. 22RECh. 8 - Prob. 23RECh. 8 - Prob. 24RECh. 8 - Prob. 25RECh. 8 - Prob. 26RECh. 8 - Prob. 27RECh. 8 - Prob. 28RECh. 8 - Prob. 29RECh. 8 - Prob. 30RECh. 8 - Prob. 31RECh. 8 - Prob. 32RECh. 8 - Prob. 33RECh. 8 - Prob. 34RECh. 8 - Prob. 35RECh. 8 - Prob. 36RECh. 8 - Prob. 37RECh. 8 - Prob. 38RECh. 8 - Prob. 39RECh. 8 - Prob. 40RECh. 8 - Prob. 41RECh. 8 - Prob. 42RECh. 8 - Prob. 43RECh. 8 - Prob. 44RECh. 8 - Prob. 45RECh. 8 - Prob. 46RECh. 8 - Revenue Functions A division of Ditton Industries...Ch. 8 - Prob. 48RECh. 8 - Prob. 49RECh. 8 - Prob. 50RECh. 8 - Prob. 51RECh. 8 - Maximizing Revenue Odyssey Travel Agencys monthly...Ch. 8 - Prob. 54RECh. 8 - Prob. 55RECh. 8 - Prob. 56RECh. 8 - Prob. 1BMCh. 8 - Prob. 2BMCh. 8 - Prob. 3BMCh. 8 - Prob. 4BMCh. 8 - Prob. 5BMCh. 8 - Evaluate R(1xy)dA, where R is the region bounded...
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