CALCULUS AND ITS APPLICATIONS BRIEF
12th Edition
ISBN: 9780135998229
Author: BITTINGER
Publisher: PEARSON
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Textbook Question
Chapter 2.5, Problem 60E
Satellite power. The power supply of a satellite is a radioisotope (radioactive substance). The power output P, in watts (W), decreases at a rate proportional to the amount present and P is given by
where t is the time, in days.
a. How much power will be available after 375 days?
b. What is the half-life of the power supply?
c. The satellite cannot operate on less than 10 W of power. How long can the satellite stay in operation?
d. How much power did the satellite have to begin with?
e. Find the rate of change of the power output, and interpret its meaning.
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Students have asked these similar questions
Total marks 15
3.
(i)
Let FRN Rm be a mapping and x = RN is a given
point. Which of the following statements are true? Construct counterex-
amples for any that are false.
(a)
If F is continuous at x then F is differentiable at x.
(b)
If F is differentiable at x then F is continuous at x.
If F is differentiable at x then F has all 1st order partial
(c)
derivatives at x.
(d) If all 1st order partial derivatives of F exist and are con-
tinuous on RN then F is differentiable at x.
[5 Marks]
(ii) Let mappings
F= (F1, F2) R³ → R² and
G=(G1, G2) R² → R²
:
be defined by
F₁ (x1, x2, x3) = x1 + x²,
G1(1, 2) = 31,
F2(x1, x2, x3) = x² + x3,
G2(1, 2)=sin(1+ y2).
By using the chain rule, calculate the Jacobian matrix of the mapping
GoF R3 R²,
i.e., JGoF(x1, x2, x3). What is JGOF(0, 0, 0)?
(iii)
[7 Marks]
Give reasons why the mapping Go F is differentiable at
(0, 0, 0) R³ and determine the derivative matrix D(GF)(0, 0, 0).
[3 Marks]
5.
(i)
Let f R2 R be defined by
f(x1, x2) = x² - 4x1x2 + 2x3.
Find all local minima of f on R².
(ii)
[10 Marks]
Give an example of a function f: R2 R which is not bounded
above and has exactly one critical point, which is a minimum. Justify briefly
Total marks 15
your answer.
[5 Marks]
Total marks 15
4.
:
Let f R2 R be defined by
f(x1, x2) = 2x²- 8x1x2+4x+2.
Find all local minima of f on R².
[10 Marks]
(ii) Give an example of a function f R2 R which is neither
bounded below nor bounded above, and has no critical point. Justify
briefly your answer.
[5 Marks]
Chapter 2 Solutions
CALCULUS AND ITS APPLICATIONS BRIEF
Ch. 2.1 - Prob. 2ECh. 2.1 - Prob. 3ECh. 2.1 - Prob. 4ECh. 2.1 - Graph each function. Then identify the domain,...Ch. 2.1 - Prob. 6ECh. 2.1 - Prob. 7ECh. 2.1 - Prob. 9ECh. 2.1 - Prob. 10ECh. 2.1 - For Exercises 9-16, an initial investment amount...Ch. 2.1 - Prob. 12E
Ch. 2.1 - Prob. 13ECh. 2.1 - Prob. 14ECh. 2.1 - For Exercises 9-16, an initial investment amount...Ch. 2.1 - Prob. 16ECh. 2.1 - Prob. 17ECh. 2.1 - Prob. 18ECh. 2.1 - Prob. 19ECh. 2.1 - Prob. 20ECh. 2.1 - For Exercises 17-26, use a calculator to find each...Ch. 2.1 - Prob. 22ECh. 2.1 - For Exercises 17-26, use a calculator to find each...Ch. 2.1 - Prob. 24ECh. 2.1 - For Exercises 17-26, use a calculator to find each...Ch. 2.1 - Prob. 26ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 28ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 30ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 32ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 34ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 36ECh. 2.1 - Given ln4=1.3863 and ln5=1.6094, use properties of...Ch. 2.1 - Prob. 38ECh. 2.1 - Prob. 39ECh. 2.1 - Prob. 40ECh. 2.1 - Prob. 41ECh. 2.1 - Prob. 42ECh. 2.1 - Prob. 43ECh. 2.1 - Prob. 44ECh. 2.1 - Solve for t. Round the answer to three decimal...Ch. 2.1 - Prob. 46ECh. 2.1 - Prob. 47ECh. 2.1 - Prob. 48ECh. 2.1 - Solve for t. Round the answer to three decimal...Ch. 2.1 - Prob. 50ECh. 2.1 - Prob. 51ECh. 2.1 - Prob. 52ECh. 2.1 - Find the domain of each logarithmic function and...Ch. 2.1 - Prob. 54ECh. 2.1 - Find the domain of each logarithmic function and...Ch. 2.1 - Prob. 56ECh. 2.1 - Find the domain of each logarithmic function and...Ch. 2.1 - Prob. 58ECh. 2.1 - Prob. 59ECh. 2.1 - Prob. 60ECh. 2.1 - Prob. 61ECh. 2.1 - Prob. 62ECh. 2.1 - Solve each logarithmic equation. Round the answer...Ch. 2.1 - Prob. 64ECh. 2.1 - Prob. 65ECh. 2.1 - Prob. 66ECh. 2.1 - Solve each logarithmic equation. Round the answer...Ch. 2.1 - Prob. 68ECh. 2.1 - U.S. travel exports. U.S. travel exports (goods...Ch. 2.1 - Prob. 70ECh. 2.1 - Compound interest: future value. Dennis deposits...Ch. 2.1 - Prob. 72ECh. 2.1 - Prob. 73ECh. 2.1 - Prob. 74ECh. 2.1 - Prob. 75ECh. 2.1 - Prob. 76ECh. 2.1 - Prob. 77ECh. 2.1 - Prob. 78ECh. 2.1 - Prob. 79ECh. 2.1 - Prob. 80ECh. 2.1 - Cooling liquid. A cup of hot coffee is placed on a...Ch. 2.1 - Prob. 82ECh. 2.1 - Prob. 83ECh. 2.1 - Prob. 84ECh. 2.1 - In Exercises 8594, solve for x. 85. e2x5ex+4=0....Ch. 2.1 - Prob. 86ECh. 2.1 - Prob. 87ECh. 2.1 - Prob. 88ECh. 2.1 - In Exercises 8594, solve for x. 89. e2xex12=0Ch. 2.1 - Prob. 90ECh. 2.1 - Prob. 91ECh. 2.1 - Prob. 92ECh. 2.1 - Prob. 93ECh. 2.1 - Prob. 94ECh. 2.1 - Prob. 95ECh. 2.1 - Prob. 96ECh. 2.1 - Prob. 97ECh. 2.1 - Prob. 99ECh. 2.1 - Prob. 100ECh. 2.1 - Prob. 101ECh. 2.1 - Prob. 102ECh. 2.1 - Prob. 103ECh. 2.2 - Differentiate. 1. g(x)=e2xCh. 2.2 - Prob. 2ECh. 2.2 - Differentiate. 3. g(x)=3e5xCh. 2.2 - Prob. 4ECh. 2.2 - Differentiate. 5. G(x)=x35e2xCh. 2.2 - Prob. 6ECh. 2.2 - Prob. 7ECh. 2.2 - Prob. 8ECh. 2.2 - Prob. 9ECh. 2.2 - Prob. 10ECh. 2.2 - Differentiate. 11. f(x)=x22x+2exCh. 2.2 - Prob. 12ECh. 2.2 - Differentiate. 13. f(x)=ex2+8xCh. 2.2 - Prob. 14ECh. 2.2 - Differentiate. 15. y=ex1Ch. 2.2 - Prob. 16ECh. 2.2 - Differentiate. 17. y=ex+x3xexCh. 2.2 - Prob. 18ECh. 2.2 - Differentiate. 19. g(x)=4x2+3xex27xCh. 2.2 - Prob. 20ECh. 2.2 - Prob. 21ECh. 2.2 - Prob. 22ECh. 2.2 - Differentiate. 23. r(t)=t2+2tet2Ch. 2.2 - Differentiate. 24. f(t)=t35te4t3Ch. 2.2 - Prob. 25ECh. 2.2 - Prob. 26ECh. 2.2 - Prob. 27ECh. 2.2 - Prob. 28ECh. 2.2 - Prob. 29ECh. 2.2 - Prob. 30ECh. 2.2 - Find the second derivative. 31. d(x)=e2x+1Ch. 2.2 - Prob. 32ECh. 2.2 - Prob. 33ECh. 2.2 - Prob. 34ECh. 2.2 - Find the second derivative. 35. w(x)=xexCh. 2.2 - Prob. 36ECh. 2.2 - Find the second derivative. 37. f(t)=(2t+3)e3tCh. 2.2 - Prob. 38ECh. 2.2 - Find the second derivative. 39. z(x)=e2x+12Ch. 2.2 - Prob. 40ECh. 2.2 - Find the second derivative. 41. w(t)=t2+2t+3e5tCh. 2.2 - Prob. 42ECh. 2.2 - Prob. 43ECh. 2.2 - Prob. 44ECh. 2.2 - Find the second derivative. 45. f(t)=e3t1Ch. 2.2 - Prob. 46ECh. 2.2 - Marginal cost. The total cost, in millions of...Ch. 2.2 - Prob. 48ECh. 2.2 - Growth of a retirement fund. Maria invests $20,000...Ch. 2.2 - Prob. 50ECh. 2.2 - Depreciation. Perriots Restaurant purchased...Ch. 2.2 - Prob. 52ECh. 2.2 - Prob. 53ECh. 2.2 - Prob. 54ECh. 2.2 - Prob. 59ECh. 2.2 - Prob. 60ECh. 2.2 - Prob. 61ECh. 2.2 - Prob. 62ECh. 2.2 - Prob. 63ECh. 2.2 - Prob. 64ECh. 2.2 - Prob. 65ECh. 2.2 - Prob. 66ECh. 2.2 - Prob. 67ECh. 2.2 - Prob. 68ECh. 2.2 - Prob. 69ECh. 2.2 - Prob. 70ECh. 2.2 - Prob. 71ECh. 2.2 - Prob. 72ECh. 2.2 - For each of the functions in Exercises 70-73,...Ch. 2.2 - Prob. 75ECh. 2.3 - Differentiate. 1. y=9lnxCh. 2.3 - Prob. 2ECh. 2.3 - Prob. 3ECh. 2.3 - Prob. 4ECh. 2.3 - Differentiate. 5. fx=ln10xCh. 2.3 - Prob. 6ECh. 2.3 - Differentiate. 7. y=x6lnxCh. 2.3 - Prob. 8ECh. 2.3 - Differentiate. 9. y=lnxx5Ch. 2.3 - Prob. 10ECh. 2.3 - Differentiate. 11. y=lnx24Hint:lnAB=lnAlnBCh. 2.3 - Prob. 12ECh. 2.3 - Differentiate. 13. y=ln3x2+2x1Ch. 2.3 - Differentiate. 14. y=ln7x2+5x+2Ch. 2.3 - Differentiate. 15. f(x)=lnx2+5xCh. 2.3 - Differentiate. 16. f(x)=lnx27xCh. 2.3 - Differentiate. 17. g(x)=(lnx)4 (Hint: Use the...Ch. 2.3 - Differentiate. 18. g(x)=(lnx)3Ch. 2.3 - Differentiate. 19. h(x)=lnx2x3+1e2xCh. 2.3 - Differentiate. 20. h(x)=ln2x4e3xx2+x+15Ch. 2.3 - Find the equation of the line tangent to the graph...Ch. 2.3 - Find the equation of the line tangent to the graph...Ch. 2.3 - Find the equation of the line tangent to the graph...Ch. 2.3 - Find the equation of the line tangent to the graph...Ch. 2.3 - Prob. 25ECh. 2.3 - Advertising. A model for consumers' response to...Ch. 2.3 - Prob. 27ECh. 2.3 - Prob. 28ECh. 2.3 - Forgetting. As part of a study, students in a...Ch. 2.3 - Walking speed. Bornstein and Bornstein found in a...Ch. 2.3 - Prob. 31ECh. 2.3 - Prob. 32ECh. 2.3 - Prob. 33ECh. 2.3 - Prob. 34ECh. 2.3 - Prob. 35ECh. 2.3 - Prob. 36ECh. 2.3 - Prob. 37ECh. 2.3 - Prob. 38ECh. 2.3 - Prob. 39ECh. 2.3 - Prob. 40ECh. 2.3 - Prob. 41ECh. 2.3 - In Exercise 34, the time t, in weeks, needed for...Ch. 2.3 - Prob. 43ECh. 2.3 - Prob. 44ECh. 2.3 - Let y1=ax and y2=lnx. Find a such that the graph...Ch. 2.3 - Prob. 46ECh. 2.4 - Find f if f(x)=4f(x).Ch. 2.4 - Find g if g(x)=6g(x).Ch. 2.4 - Find the function that satisfies dA/dt=9A.Ch. 2.4 - Find the function that satisfies dP/dt=3P(t).Ch. 2.4 - Find the function that satisfies dQ/dt=kQ.Ch. 2.4 - Find the function that satisfies dR/dt=kR.Ch. 2.4 - U.S. patents. Between 2006 and 2016, the number of...Ch. 2.4 - Franchise expansion. Pete Zah's, Inc., is selling...Ch. 2.4 - Compound interest. If an amount P0 is invested in...Ch. 2.4 - Compound interest. If an amount P0 is deposited in...Ch. 2.4 - Bottled water sales. The volume of bottled water...Ch. 2.4 - Apps downloads. Since June 2014, the number of...Ch. 2.4 - Art masterpieces. In 2004, a collector paid...Ch. 2.4 - Prob. 14ECh. 2.4 - Federal receipts. In 2013, U.S. federal receipts...Ch. 2.4 - Prob. 16ECh. 2.4 - Prob. 17ECh. 2.4 - Prob. 18ECh. 2.4 - Value of Manhattan Island. Peter Minuit of the...Ch. 2.4 - Total revenue. Intel, a computer chip...Ch. 2.4 - The U.S. Forever Stamp. The U.S. Postal Service...Ch. 2.4 - Prob. 22ECh. 2.4 - Effect of advertising. Suppose that SpryBorg Inc....Ch. 2.4 - Prob. 24ECh. 2.4 - Prob. 25ECh. 2.4 - Prob. 26ECh. 2.4 - Prob. 27ECh. 2.4 - Prob. 28ECh. 2.4 - Limited population growth: Human Population....Ch. 2.4 - Prob. 30ECh. 2.4 - 44. Limited population growth. A lake is stocked...Ch. 2.4 - Prob. 32ECh. 2.4 - Hullian learning model. The Hullian learning model...Ch. 2.4 - Spread of infection. Spread by skin-to-skin...Ch. 2.4 - Prob. 35ECh. 2.4 - Prob. 36ECh. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - We have now studied models for linear, quadratic,...Ch. 2.4 - Prob. 48ECh. 2.4 - Prob. 49ECh. 2.4 - Prob. 50ECh. 2.4 - Prob. 51ECh. 2.5 - Prob. 1ECh. 2.5 - Prob. 2ECh. 2.5 - Prob. 3ECh. 2.5 - Prob. 4ECh. 2.5 - Prob. 5ECh. 2.5 - Prob. 6ECh. 2.5 - Prob. 7ECh. 2.5 - Prob. 8ECh. 2.5 - Prob. 9ECh. 2.5 - Prob. 10ECh. 2.5 - Prob. 11ECh. 2.5 - Prob. 12ECh. 2.5 - Population decay. The population of Cortez Breaks...Ch. 2.5 - Prob. 14ECh. 2.5 - Prob. 15ECh. 2.5 - Prob. 16ECh. 2.5 - Prob. 17ECh. 2.5 - Prob. 18ECh. 2.5 - Prob. 19ECh. 2.5 - Prob. 20ECh. 2.5 - Prob. 21ECh. 2.5 - Prob. 22ECh. 2.5 - Prob. 23ECh. 2.5 - Prob. 24ECh. 2.5 - Prob. 25ECh. 2.5 - Prob. 26ECh. 2.5 - Radioactive decay. For Exercises 23-26, complete...Ch. 2.5 - Radioactive decay. For Exercises 23-26, complete...Ch. 2.5 - Carbon dating. How old is an ivory tusk that has...Ch. 2.5 - Carbon dating. How old is a piece of wood that has...Ch. 2.5 - 21. Cancer Treatment. Iodine-125 is often used to...Ch. 2.5 - Carbon dating. How old is a Chinese artifact that...Ch. 2.5 - Prob. 33ECh. 2.5 - Present value. Following the birth of a child, a...Ch. 2.5 - Present value. Following the birth of their child,...Ch. 2.5 - Present value. Desmond wants to have $15,000...Ch. 2.5 - 27. Sports salaries. An athlete signs a contract...Ch. 2.5 - 28. Actor’s salaries. An actor signs a film...Ch. 2.5 - Prob. 39ECh. 2.5 - Prob. 40ECh. 2.5 - Salvage value. Lucas Mining estimates that the...Ch. 2.5 - Prob. 42ECh. 2.5 - Prob. 43ECh. 2.5 - Prob. 47ECh. 2.5 - Prob. 48ECh. 2.5 - Prob. 49ECh. 2.5 - 37. Decline in beef consumption. Annual...Ch. 2.5 - Prob. 51ECh. 2.5 - Prob. 52ECh. 2.5 - 40. Cooling. After warming the water in a hot tub...Ch. 2.5 - 41. Cooling. The temperature in a whirlpool bath...Ch. 2.5 - Forensics. A coroner arrives at a murder scene at...Ch. 2.5 - 43. Forensics. A coroner arrives at 11 p.m. She...Ch. 2.5 - Prisoner-of-war protest. The initial weight of a...Ch. 2.5 - 45. Political Protest. A monk weighing 170 lb...Ch. 2.5 - 46. Atmospheric Pressure. Atmospheric pressure P...Ch. 2.5 - 47. Satellite power. The power supply of a...Ch. 2.5 - Prob. 61ECh. 2.5 - For each of the scatterplots in Exercise 49-58,...Ch. 2.5 - Prob. 63ECh. 2.5 - Prob. 64ECh. 2.5 - Prob. 65ECh. 2.5 - Prob. 66ECh. 2.5 - For each of the scatterplots in Exercise 49-58,...Ch. 2.5 - Prob. 68ECh. 2.5 - Prob. 69ECh. 2.5 - For each of the scatterplots in Exercise 49-58,...Ch. 2.5 - Prob. 71ECh. 2.5 - A sample of an element lost 25% of its mass in 5...Ch. 2.5 - 60. A vehicle lost 15% of its value in 2 yr....Ch. 2.5 - The Beer-Lambert Law. A beam of light enters a...Ch. 2.5 - The Beer-Lambert Law. A beam of light enters a...Ch. 2.5 - Prob. 76ECh. 2.5 - An interest rate decreases from 8% to 7.2%....Ch. 2.5 - Prob. 78ECh. 2.6 - Prob. 1ECh. 2.6 - Prob. 2ECh. 2.6 - Prob. 3ECh. 2.6 - Prob. 4ECh. 2.6 - Prob. 5ECh. 2.6 - Prob. 6ECh. 2.6 - Prob. 7ECh. 2.6 - Prob. 8ECh. 2.6 - In Exercises 1-12, find an exponential function of...Ch. 2.6 - Prob. 10ECh. 2.6 - Prob. 11ECh. 2.6 - Prob. 12ECh. 2.6 - Differentiate.
1.
Ch. 2.6 - Differentiate. y=7xCh. 2.6 - Prob. 15ECh. 2.6 - Prob. 16ECh. 2.6 - Prob. 17ECh. 2.6 - Prob. 18ECh. 2.6 - Prob. 19ECh. 2.6 - Prob. 20ECh. 2.6 - Differentiate. y=7x4+2Ch. 2.6 - Differentiate.
8.
Ch. 2.6 - Differentiate. 23. f(t)=100(0.52)tCh. 2.6 - Prob. 24ECh. 2.6 - Prob. 25ECh. 2.6 - Prob. 26ECh. 2.6 - Prob. 27ECh. 2.6 - Prob. 28ECh. 2.6 - Prob. 29ECh. 2.6 - Prob. 30ECh. 2.6 - Differentiate. 31. y=5log6x2+xCh. 2.6 - Prob. 32ECh. 2.6 - Prob. 33ECh. 2.6 - Prob. 34ECh. 2.6 - Prob. 35ECh. 2.6 - Prob. 36ECh. 2.6 - Prob. 37ECh. 2.6 - Prob. 38ECh. 2.6 - Prob. 39ECh. 2.6 - Prob. 40ECh. 2.6 - Prob. 41ECh. 2.6 - Prob. 42ECh. 2.6 - Prob. 43ECh. 2.6 - Prob. 44ECh. 2.6 - Prob. 45ECh. 2.6 - Prob. 46ECh. 2.6 - Prob. 47ECh. 2.6 - Prob. 48ECh. 2.6 - Prob. 49ECh. 2.6 - Prob. 50ECh. 2.6 - Recycling glass. In 2012,34.1 of all glass...Ch. 2.6 - Prob. 52ECh. 2.6 - Prob. 53ECh. 2.6 - Prob. 54ECh. 2.6 - Prob. 55ECh. 2.6 - Prob. 56ECh. 2.6 - Prob. 57ECh. 2.6 - Prob. 58ECh. 2.6 - Prob. 59ECh. 2.6 - Prob. 60ECh. 2.6 - A population P0 doubles every 5yr. Find the...Ch. 2.6 - Prob. 62ECh. 2.6 - Prob. 63ECh. 2.6 - Prob. 64ECh. 2.6 - Prob. 65ECh. 2.6 - Prob. 66ECh. 2.6 - Prob. 67ECh. 2.6 - Prob. 68ECh. 2 - Prob. 1RECh. 2 - In Exercises 1-6, match each equation in column A...Ch. 2 - In Exercises 1-6, match each equation in column A...Ch. 2 - Prob. 4RECh. 2 - In Exercises 1-6, match each equation in column A...Ch. 2 - Prob. 6RECh. 2 - Prob. 7RECh. 2 - Prob. 8RECh. 2 - Prob. 9RECh. 2 - Prob. 10RECh. 2 - Prob. 11RECh. 2 - Prob. 12RECh. 2 - Prob. 13RECh. 2 - Prob. 14RECh. 2 - Prob. 16RECh. 2 - Prob. 17RECh. 2 - Prob. 18RECh. 2 - Prob. 19RECh. 2 - Prob. 20RECh. 2 - Prob. 21RECh. 2 - Prob. 22RECh. 2 - Prob. 23RECh. 2 - Prob. 24RECh. 2 - Prob. 25RECh. 2 - Prob. 26RECh. 2 - Prob. 27RECh. 2 - Prob. 28RECh. 2 - Prob. 29RECh. 2 - Prob. 30RECh. 2 - Prob. 31RECh. 2 - Prob. 32RECh. 2 - Prob. 33RECh. 2 - Prob. 34RECh. 2 - Prob. 35RECh. 2 - Prob. 36RECh. 2 - Prob. 37RECh. 2 - Prob. 38RECh. 2 - Prob. 39RECh. 2 - Business: price of a prime-rib dinner. Suppose the...Ch. 2 - Prob. 42RECh. 2 - Prob. 43RECh. 2 - Prob. 44RECh. 2 - Prob. 45RECh. 2 - Prob. 46RECh. 2 - Prob. 47RECh. 2 - Prob. 48RECh. 2 - Prob. 49RECh. 2 - Prob. 50RECh. 2 - Prob. 52RECh. 2 - Prob. 53RECh. 2 - Prob. 54RECh. 2 - Prob. 55RECh. 2 - Prob. 56RECh. 2 - Prob. 57RECh. 2 - Prob. 58RECh. 2 - Differentiate. y=2e3xCh. 2 - Differentiate. y=(lnx)4Ch. 2 - Differentiate.
3.
Ch. 2 - Differentiate. f(x)=lnx7Ch. 2 - Differentiate.
5.
Ch. 2 - Differentiate. f(x)=3exlnxCh. 2 - Differentiate.
7.
Ch. 2 - Prob. 8TCh. 2 - Prob. 9TCh. 2 - Prob. 10TCh. 2 - Prob. 11TCh. 2 - Prob. 12TCh. 2 - Prob. 13TCh. 2 - Prob. 15TCh. 2 - Prob. 16TCh. 2 - Prob. 17TCh. 2 - 18. Life Science: decay rate. The decay rate of...Ch. 2 - Prob. 19TCh. 2 - Business: effect of advertising. Twin City...Ch. 2 - Prob. 21TCh. 2 - Prob. 22TCh. 2 - Differentiate: y=x(lnx)22xlnx+2x.Ch. 2 - Prob. 24TCh. 2 - Prob. 25TCh. 2 - Prob. 26TCh. 2 - Prob. 1ETECh. 2 - Use the exponential function to predict gross...Ch. 2 - Prob. 3ETECh. 2 - Prob. 4ETECh. 2 - Prob. 5ETECh. 2 - Prob. 7ETECh. 2 - Prob. 8ETECh. 2 - Prob. 9ETECh. 2 - Prob. 10ETECh. 2 - Prob. 11ETECh. 2 - Prob. 12ETE
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- 4. Let F RNR be a mapping. (i) x ЄRN ? (ii) : What does it mean to say that F is differentiable at a point [1 Mark] In Theorem 5.4 in the Lecture Notes we proved that if F is differentiable at a point x E RN then F is continuous at x. Proof. Let (n) CRN be a sequence such that xn → x ЄERN as n → ∞. We want to show that F(xn) F(x), which means F is continuous at x. Denote hnxn - x, so that ||hn|| 0. Thus we find ||F(xn) − F(x)|| = ||F(x + hn) − F(x)|| * ||DF (x)hn + R(hn) || (**) ||DF(x)hn||+||R(hn)||| → 0, because the linear mapping DF(x) is continuous and for all large nЄ N, (***) ||R(hn) || ||R(hn) || ≤ → 0. ||hn|| (a) Explain in details why ||hn|| → 0. [3 Marks] (b) Explain the steps labelled (*), (**), (***). [6 Marks]arrow_forward4. In Theorem 5.4 in the Lecture Notes we proved that if F: RN → Rm is differentiable at x = RN then F is continuous at x. Proof. Let (xn) CRN be a sequence such that x → x Є RN as n → ∞. We want F(x), which means F is continuous at x. to show that F(xn) Denote hn xnx, so that ||hn||| 0. Thus we find ||F (xn) − F(x) || (*) ||F(x + hn) − F(x)|| = ||DF(x)hn + R(hn)|| (**) ||DF(x)hn|| + ||R(hn) || → 0, because the linear mapping DF(x) is continuous and for all large n = N, |||R(hn) || ≤ (***) ||R(hn)|| ||hn|| → 0. Explain the steps labelled (*), (**), (***) [6 Marks] (ii) Give an example of a function F: RR such that F is contin- Total marks 10 uous at x=0 but F is not differentiable at at x = 0. [4 Marks]arrow_forward3. Let f R2 R be a function. (i) Explain in your own words the relationship between the existence of all partial derivatives of f and differentiability of f at a point x = R². (ii) Consider R2 → R defined by : [5 Marks] f(x1, x2) = |2x1x2|1/2 Show that af af -(0,0) = 0 and -(0, 0) = 0, Jx1 მx2 but f is not differentiable at (0,0). [10 Marks]arrow_forward
- (1) Write the following quadratic equation in terms of the vertex coordinates.arrow_forwardThe final answer is 8/π(sinx) + 8/3π(sin 3x)+ 8/5π(sin5x)....arrow_forwardKeity x२ 1. (i) Identify which of the following subsets of R2 are open and which are not. (a) A = (2,4) x (1, 2), (b) B = (2,4) x {1,2}, (c) C = (2,4) x R. Provide a sketch and a brief explanation to each of your answers. [6 Marks] (ii) Give an example of a bounded set in R2 which is not open. [2 Marks] (iii) Give an example of an open set in R2 which is not bounded. [2 Marksarrow_forward
- 2. (i) Which of the following statements are true? Construct coun- terexamples for those that are false. (a) sequence. Every bounded sequence (x(n)) nEN C RN has a convergent sub- (b) (c) (d) Every sequence (x(n)) nEN C RN has a convergent subsequence. Every convergent sequence (x(n)) nEN C RN is bounded. Every bounded sequence (x(n)) EN CRN converges. nЄN (e) If a sequence (xn)nEN C RN has a convergent subsequence, then (xn)nEN is convergent. [10 Marks] (ii) Give an example of a sequence (x(n))nEN CR2 which is located on the parabola x2 = x², contains infinitely many different points and converges to the limit x = (2,4). [5 Marks]arrow_forward2. (i) What does it mean to say that a sequence (x(n)) nEN CR2 converges to the limit x E R²? [1 Mark] (ii) Prove that if a set ECR2 is closed then every convergent sequence (x(n))nen in E has its limit in E, that is (x(n)) CE and x() x x = E. [5 Marks] (iii) which is located on the parabola x2 = = x x4, contains a subsequence that Give an example of an unbounded sequence (r(n)) nEN CR2 (2, 16) and such that x(i) converges to the limit x = (2, 16) and such that x(i) # x() for any i j. [4 Marksarrow_forward1. (i) which are not. Identify which of the following subsets of R2 are open and (a) A = (1, 3) x (1,2) (b) B = (1,3) x {1,2} (c) C = AUB (ii) Provide a sketch and a brief explanation to each of your answers. [6 Marks] Give an example of a bounded set in R2 which is not open. (iii) [2 Marks] Give an example of an open set in R2 which is not bounded. [2 Marks]arrow_forward
- 2. if limit. Recall that a sequence (x(n)) CR2 converges to the limit x = R² lim ||x(n)x|| = 0. 818 - (i) Prove that a convergent sequence (x(n)) has at most one [4 Marks] (ii) Give an example of a bounded sequence (x(n)) CR2 that has no limit and has accumulation points (1, 0) and (0, 1) [3 Marks] (iii) Give an example of a sequence (x(n))neN CR2 which is located on the hyperbola x2 1/x1, contains infinitely many different Total marks 10 points and converges to the limit x = (2, 1/2). [3 Marks]arrow_forward3. (i) Consider a mapping F: RN Rm. Explain in your own words the relationship between the existence of all partial derivatives of F and dif- ferentiability of F at a point x = RN. (ii) [3 Marks] Calculate the gradient of the following function f: R2 → R, f(x) = ||x||3, Total marks 10 where ||x|| = √√√x² + x/2. [7 Marks]arrow_forward1. (i) (ii) which are not. What does it mean to say that a set ECR2 is closed? [1 Mark] Identify which of the following subsets of R2 are closed and (a) A = [-1, 1] × (1, 3) (b) B = [-1, 1] x {1,3} (c) C = {(1/n², 1/n2) ER2 | n EN} Provide a sketch and a brief explanation to each of your answers. [6 Marks] (iii) Give an example of a closed set which does not have interior points. [3 Marks]arrow_forward
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