Study Guide for Stewart's Multivariable Calculus, 8th
8th Edition
ISBN: 9781305271845
Author: Stewart, James
Publisher: Brooks Cole
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Chapter 15.4, Problem 2PT
To determine
The appropriate option for the statement “The y-coordinate of the center of mass of a lamina D with density
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Calculus III
May I please have the example, definition semicolons, and all blanks completed and solved?
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A company estimates that the revenue (in dollars) from the sale of x doghouses
is given by R(x) = 12,000 In (0.02x+1). Use the differential to approximate the
change in revenue from the sale of one more doghouse if 80 doghouses have
already been sold.
The revenue will increase by $ if one more doghouse is made.
(Round to the nearest cent as needed.)
The population of bacteria (in millions) in a certain culture x hours after an experimental
20x
nutrient is introduced into the culture is P(x) = -
2
Use the differential to approximate the changes in population for the following changes in x.
8+x
a. 1 to 1.5
b. 3 to 3.25
a. Use the differential to approximate the change in population for x=1 to 1.5.
Between 1 and 1.5 hours, the population of bacteria changes by million.
(Round to three decimal places as needed.)
Chapter 15 Solutions
Study Guide for Stewart's Multivariable Calculus, 8th
Ch. 15.1 - Prob. 1PTCh. 15.1 - Prob. 2PTCh. 15.1 - Let R={(x,y)|3x5,2y4}andf(x,y)=y2x2.For every...Ch. 15.1 - Sometimes, Always, or Never: Rf(x,y)dA is the...Ch. 15.1 - Prob. 5PTCh. 15.1 - Prob. 6PTCh. 15.1 - Prob. 7PTCh. 15.1 - Prob. 8PTCh. 15.2 - Prob. 1PTCh. 15.2 - Prob. 2PT
Ch. 15.2 - Prob. 3PTCh. 15.2 - Prob. 4PTCh. 15.3 - Prob. 1PTCh. 15.3 - Prob. 2PTCh. 15.4 - Prob. 1PTCh. 15.4 - Prob. 2PTCh. 15.4 - Prob. 3PTCh. 15.4 - True or False: For f(x, y) = x2(x + y), x and y...Ch. 15.5 - Prob. 1PTCh. 15.6 - Prob. 1PTCh. 15.6 - Prob. 2PTCh. 15.6 - EzdV, where E is the wedge-shaped solid shown at...Ch. 15.6 - Prob. 4PTCh. 15.7 - Prob. 1PTCh. 15.7 - Prob. 2PTCh. 15.7 - Prob. 3PTCh. 15.7 - Prob. 4PTCh. 15.8 - Prob. 1PTCh. 15.8 - Prob. 2PTCh. 15.8 - Prob. 3PTCh. 15.8 - Prob. 4PTCh. 15.9 - Find the Jacobian for x = u2v2, y = u2 + v2. a)...Ch. 15.9 - Find the iterated integral for RdA, where R is the...
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- dy Assume x and y are functions of t. Evaluate for 2xy -3x+2y³ = - 72, with the conditions dt dx dt = -8, x=2, y = -3. dy dt (Type an exact answer in simplified form.)arrow_forwardConsider the sequence below: 1 1 1 (a) Express this sequence as a recurrence relation (b) Express this sequence in the form {a}=1 (c) Does this sequence converge or diverge? Justify your answer. Consider the sequence below: 1 1 1 1, 4' 9' 16' (a) Express this sequence in the form {ak}=1 (b) Does this sequence converge or diverge? Justify your answer. Consider the sequence below: 345 2. 4' 9' 16' ·} (a) Express this sequence in the form {a}1 (b) Does this sequence converge or diverge? Justify your answer.arrow_forwardUse the growth rate of sequences theorem to find the limit or state it divergesarrow_forward
- calculate the maximum value of the directional derivativearrow_forward2. A tank with a capacity of 650 gal. originally contains 200 gal of water with 100 lb. of salt in solution. Water containing 1 lb. of salt per gallon is entering at a rate of 4 gal/min, and the mixture is allowed to flow out of the tank at a rate of 3 gal/min. a. Find the amount of salt in the tank at any time prior to the instant when the tank begins to overflow (650 gallons). b. Find the concentration (in pounds per gallon) of salt in the tank when the tank hits 400 gallons. D.E. for mixture problems: dv dt=11-12 dA A(t) dtarrow_forward- Suppose that you have the differential equation: dy = (y - 2) (y+3) dx a. What are the equilibrium solutions for the differential equation? b. Where is the differential equation increasing or decreasing? Show how you know. Showing them on the drawing is not enough. c. Where are the changes in concavity for the differential equation? Show how you know. Showing them on the drawing is not enough. d. Consider the slope field for the differential equation. Draw solution curves given the following initial conditions: i. y(0) = -5 ii. y(0) = -1 iii. y(0) = 2arrow_forward
- 5. Suppose that a mass of 5 stretches a spring 10. The mass is acted on by an external force of F(t)=10 sin () and moves in a medium that gives a damping coefficient of ½. If the mass is set in motion with an initial velocity of 3 and is stretched initially to a length of 5. (I purposefully removed the units- don't worry about them. Assume no conversions are needed.) a) Find the equation for the displacement of the spring mass at time t. b) Write the equation for the displacement of the spring mass in phase-mode form. c) Characterize the damping of the spring mass system as overdamped, underdamped or critically damped. Explain how you know. D.E. for Spring Mass Systems k m* g = kLo y" +—y' + — —±y = —±F(t), y(0) = yo, y'(0) = vo m 2 A₁ = √c₁² + C₂² Q = tan-1arrow_forward4. Given the following information determine the appropriate trial solution to find yp. Do not solve the differential equation. Do not find the constants. a) (D-4)2(D+ 2)y = 4e-2x b) (D+ 1)(D² + 10D +34)y = 2e-5x cos 3xarrow_forward3. Determine the appropriate annihilator for the given F(x). a) F(x) = 5 cos 2x b) F(x)=9x2e3xarrow_forward
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