Calculus: Early Transcendentals, 2nd Edition
2nd Edition
ISBN: 9780321965165
Author: William L. Briggs, Lyle Cochran, Bernard Gillett
Publisher: PEARSON
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Chapter 1.1, Problem 26E
Composite functions and notation Let f(x) = x2 − 4, g(x) = x3, and F(x) = l/(x − 3). Simplify or evaluate the following expressions.
26. f(p2)
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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 1 Solutions
Calculus: Early Transcendentals, 2nd Edition
Ch. 1.1 - Use the terms domain, range, independent variable,...Ch. 1.1 - Is the independent variable of a function...Ch. 1.1 - Explain how the vertical line test is used to...Ch. 1.1 - If f(x) = 1/(x3 + 1), what is f(2)? What is f(y2)?Ch. 1.1 - Which statement about a function is true? (i) For...Ch. 1.1 - If f(x)=xand g(x) = x3 2, find the compositions...Ch. 1.1 - Suppose f and g are even functions with f(2) = 2...Ch. 1.1 - Explain how to find the domain of f g if you know...Ch. 1.1 - Sketch a graph of an even function f and state how...Ch. 1.1 - Sketch a graph of an odd function f and state how...
Ch. 1.1 - Vertical line test Decide whether graphs A, B, or...Ch. 1.1 - Vertical line test Decide whether graphs A, B, or...Ch. 1.1 - Domain and range Graph each function with a...Ch. 1.1 - Prob. 14ECh. 1.1 - Prob. 15ECh. 1.1 - Prob. 16ECh. 1.1 - Domain and range Graph each function with a...Ch. 1.1 - Domain and range Graph each function with a...Ch. 1.1 - Domain and range Graph each function with a...Ch. 1.1 - Domain and range Graph each function with a...Ch. 1.1 - Domain in context Determine an appropriate domain...Ch. 1.1 - Prob. 22ECh. 1.1 - Domain in context Determine an appropriate domain...Ch. 1.1 - Prob. 24ECh. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Composite functions and notation Let f(x) = x2 4,...Ch. 1.1 - Prob. 37ECh. 1.1 - Prob. 38ECh. 1.1 - Prob. 39ECh. 1.1 - Working with composite functions Find possible...Ch. 1.1 - More composite functions Let f(x) = |x|, g(x) = x2...Ch. 1.1 - More composite functions Let f(x) = |x|, g(x) = x2...Ch. 1.1 - Prob. 43ECh. 1.1 - More composite functions Let f(x) = |x|, g(x) = x2...Ch. 1.1 - More composite functions Let f(x) = |x|, g(x) = x2...Ch. 1.1 - Prob. 46ECh. 1.1 - Prob. 47ECh. 1.1 - More composite functions Let f(x) = |x|, g(x) = x2...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Missing piece Let g(x) = x2 + 3. Find a function f...Ch. 1.1 - Composite functions from graphs Use the graphs of...Ch. 1.1 - Composite functions from tables Use the table to...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Working with difference quotients Simplify the...Ch. 1.1 - Interpreting the slope of secant lines In each...Ch. 1.1 - Interpreting the slope of secant lines In each...Ch. 1.1 - Interpreting the slope of secant lines In each...Ch. 1.1 - Prob. 70ECh. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Prob. 75ECh. 1.1 - Prob. 76ECh. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Symmetry Determine whether the graphs of the...Ch. 1.1 - Prob. 79ECh. 1.1 - Symmetry in graphs State whether the functions...Ch. 1.1 - Explain why or why not Determine whether the...Ch. 1.1 - Prob. 82ECh. 1.1 - Absolute value graph Use the definition of...Ch. 1.1 - Even and odd at the origin a. If f(0) is defined...Ch. 1.1 - Polynomial calculations Find a polynomial f that...Ch. 1.1 - Polynomial calculations Find a polynomial f that...Ch. 1.1 - Polynomial calculations Find a polynomial f that...Ch. 1.1 - Polynomial calculations Find a polynomial f that...Ch. 1.1 - Difference quotients Simplify the difference...Ch. 1.1 - Difference quotients Simplify the difference...Ch. 1.1 - Difference quotients Simplify the difference...Ch. 1.1 - Difference quotients Simplify the difference...Ch. 1.1 - Launching a rocket A small rocket is launched...Ch. 1.1 - Prob. 94ECh. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Prob. 97ECh. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Combining even and odd functions Let E be an even...Ch. 1.1 - Composition of even and odd functions from tables...Ch. 1.1 - Composition of even and odd functions from graphs...Ch. 1.2 - Give four ways that functions may be defined and...Ch. 1.2 - What is the domain of a polynomial?Ch. 1.2 - What is the domain of a rational function?Ch. 1.2 - Describe what is meant by a piecewise linear...Ch. 1.2 - Prob. 5ECh. 1.2 - Prob. 6ECh. 1.2 - How do you obtain the graph of y = f(x + 2) from...Ch. 1.2 - How do you obtain the graph of y = 3f(x) from the...Ch. 1.2 - How do you obtain the graph of y = f(3x) from the...Ch. 1.2 - How do you obtain the graph of y = 4(x + 3)2 + 6...Ch. 1.2 - Graphs of functions Find the linear functions that...Ch. 1.2 - Prob. 12ECh. 1.2 - Graph of a linear function Find and graph the...Ch. 1.2 - Graph of a linear function Find and graph the...Ch. 1.2 - Demand function Sales records indicate that if...Ch. 1.2 - Fundraiser The Biology Club plans to have a...Ch. 1.2 - Prob. 17ECh. 1.2 - Taxicab fees A taxicab ride costs 3.50 plus 2.50...Ch. 1.2 - Graphs of piecewise functions Write a definition...Ch. 1.2 - Graphs of piecewise functions Write a definition...Ch. 1.2 - Parking fees Suppose that it costs 5 per minute to...Ch. 1.2 - Taxicab fees A taxicab ride costs 3.50 plus 2.50...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Piecewise linear functions Graph the following...Ch. 1.2 - Graphs of functions a. Use a graphing utility to...Ch. 1.2 - Graphs of functions a. Use a graphing utility to...Ch. 1.2 - Graphs of functions a. Use a graphing utility to...Ch. 1.2 - Graphs of functions a. Use a graphing utility to...Ch. 1.2 - Prob. 33ECh. 1.2 - Graphs of functions a. Use a graphing utility to...Ch. 1.2 - Slope functions Determine the slope function for...Ch. 1.2 - Slope functions Determine the slope function for...Ch. 1.2 - Prob. 37ECh. 1.2 - Prob. 38ECh. 1.2 - Area functions Let A(x) be the area of the region...Ch. 1.2 - Area functions Let A(x) be the area of the region...Ch. 1.2 - Area functions Let A(x) be the area of the region...Ch. 1.2 - Area functions Let A(x) be the area of the region...Ch. 1.2 - Transformations of y = |x| The functions f and g...Ch. 1.2 - Transformations Use the graph of f in the figure...Ch. 1.2 - Transformations of f(x) = x2 Use shifts and...Ch. 1.2 - Transformations of f(x)=x Use shifts and scalings...Ch. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Prob. 51ECh. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Prob. 53ECh. 1.2 - Shifting and scaling Use shifts and scalings to...Ch. 1.2 - Explain why or why not Determine whether the...Ch. 1.2 - Intersection problems Use analytical methods to...Ch. 1.2 - Intersection problems Use analytical methods to...Ch. 1.2 - Prob. 58ECh. 1.2 - Prob. 59ECh. 1.2 - Prob. 60ECh. 1.2 - Prob. 61ECh. 1.2 - Prob. 62ECh. 1.2 - Prob. 63ECh. 1.2 - Prob. 64ECh. 1.2 - Prob. 65ECh. 1.2 - Prob. 66ECh. 1.2 - Prob. 67ECh. 1.2 - Prob. 68ECh. 1.2 - Prob. 69ECh. 1.2 - Prob. 70ECh. 1.2 - Features of a graph Consider the graph of the...Ch. 1.2 - Features of a graph Consider the graph of the...Ch. 1.2 - Relative acuity of the human eye The fovea...Ch. 1.2 - Tennis probabilities Suppose the probability of a...Ch. 1.2 - Bald eagle population Since DDT was banned and the...Ch. 1.2 - Temperature scales a. Find the linear function C =...Ch. 1.2 - Automobile lease vs. purchase A car dealer offers...Ch. 1.2 - Prob. 78ECh. 1.2 - Prob. 79ECh. 1.2 - Walking and rowing Kelly has finished a picnic on...Ch. 1.2 - Optimal boxes Imagine a lidless box with height h...Ch. 1.2 - Composition of polynomials Let f be an nth-degree...Ch. 1.2 - Parabola vertex property Prove that if a parabola...Ch. 1.2 - Parabola properties Consider the general quadratic...Ch. 1.2 - Factorial function The factorial function is...Ch. 1.2 - Prob. 86ECh. 1.2 - Prob. 87ECh. 1.3 - For b 0, what are the domain and range of f(x) =...Ch. 1.3 - Give an example of a function that is one-to-one...Ch. 1.3 - Explain why a function that is not one-to-one on...Ch. 1.3 - Prob. 4ECh. 1.3 - Prob. 5ECh. 1.3 - Prob. 6ECh. 1.3 - Prob. 7ECh. 1.3 - How is the property bx+ y = bxby related to the...Ch. 1.3 - For b 0 with b 1, what are the domain and range...Ch. 1.3 - Express 25 using base e.Ch. 1.3 - One-to-one functions 11. Find three intervals on...Ch. 1.3 - Find four intervals on which f is one-to-one,...Ch. 1.3 - Sketch a graph of a function that is one-to-one on...Ch. 1.3 - Sketch a graph of a function that is one-to-one on...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Where do inverses exist? Use analytical and/or...Ch. 1.3 - Finding inverse functions a. Find the inverse of...Ch. 1.3 - Prob. 22ECh. 1.3 - Prob. 23ECh. 1.3 - Prob. 24ECh. 1.3 - Finding inverse functions a. Find the inverse of...Ch. 1.3 - Prob. 26ECh. 1.3 - Finding inverse functions a. Find the inverse of...Ch. 1.3 - Prob. 28ECh. 1.3 - Splitting up curves The unit circle x2 + y2 = 1...Ch. 1.3 - Splitting up curves The equation y4 = 4x2 is...Ch. 1.3 - Graphing inverse functions Find the inverse...Ch. 1.3 - Prob. 32ECh. 1.3 - Prob. 33ECh. 1.3 - Prob. 34ECh. 1.3 - Prob. 35ECh. 1.3 - Graphing inverse functions Find the inverse...Ch. 1.3 - Prob. 37ECh. 1.3 - Prob. 38ECh. 1.3 - Graphs of inverses Sketch the graph of the inverse...Ch. 1.3 - Graphs of inverses Sketch the graph of the inverse...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Solving logarithmic equations Solve the following...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Properties of logarithms Assume logb x = 0.36,...Ch. 1.3 - Solving equations Solve the following equations....Ch. 1.3 - Solving equations Solve the following equations....Ch. 1.3 - Solving equations Solve the following equations....Ch. 1.3 - Solving equations Solve the following equations....Ch. 1.3 - Using inverse relations One hundred grams of a...Ch. 1.3 - Prob. 58ECh. 1.3 - Calculator base change Write the following...Ch. 1.3 - Calculator base change Write the following...Ch. 1.3 - Calculator base change Write the following...Ch. 1.3 - Calculator base change Write the following...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Changing bases Convert the following expressions...Ch. 1.3 - Explain why or why not Determine whether the...Ch. 1.3 - Graphs of exponential functions The following...Ch. 1.3 - Graphs of logarithmic functions The following...Ch. 1.3 - Graphs of modified exponential functions Without...Ch. 1.3 - Graphs of modified logarithmic functions Without...Ch. 1.3 - Large intersection point Use any means to...Ch. 1.3 - Finding all inverses Find all the inverses...Ch. 1.3 - Prob. 76ECh. 1.3 - Finding all inverses Find all the inverses...Ch. 1.3 - Finding all inverses Find all the inverses...Ch. 1.3 - Population model A culture of bacteria has a...Ch. 1.3 - Charging a capacitor A capacitor is a device that...Ch. 1.3 - Height and time The height in feet of a baseball...Ch. 1.3 - Velocity of a skydiver The velocity of a skydiver...Ch. 1.3 - Prob. 83ECh. 1.3 - Prob. 84ECh. 1.3 - Prob. 85ECh. 1.3 - Prob. 86ECh. 1.3 - Prob. 87ECh. 1.3 - Inverse of composite functions a. Let g(x) = 2x +...Ch. 1.3 - Prob. 89ECh. 1.3 - Inverses of (some) cubics Finding the inverse of a...Ch. 1.3 - Prob. 91ECh. 1.4 - Define the six trigonometric functions in terms of...Ch. 1.4 - Prob. 2ECh. 1.4 - How is the radian measure of an angle determined?Ch. 1.4 - Explain what is meant by the period of a...Ch. 1.4 - What are the three Pythagorean identities for the...Ch. 1.4 - How are the sine and cosine functions related to...Ch. 1.4 - Where is the tangent function undefined?Ch. 1.4 - What is the domain of the secant function?Ch. 1.4 - Explain why the domain of the sine function must...Ch. 1.4 - Why do the values of cos1 x lie in the interval...Ch. 1.4 - Prob. 11ECh. 1.4 - Prob. 12ECh. 1.4 - The function tan x is undefined at x = /2. How...Ch. 1.4 - State the domain and range of sec1 x.Ch. 1.4 - Prob. 15ECh. 1.4 - Evaluating trigonometric functions Evaluate the...Ch. 1.4 - Prob. 17ECh. 1.4 - Prob. 18ECh. 1.4 - Prob. 19ECh. 1.4 - Prob. 20ECh. 1.4 - Prob. 21ECh. 1.4 - Evaluating trigonometric functions Evaluate the...Ch. 1.4 - Prob. 23ECh. 1.4 - Prob. 24ECh. 1.4 - Prob. 25ECh. 1.4 - Prob. 26ECh. 1.4 - Prob. 27ECh. 1.4 - Evaluating trigonometric functions Evaluate the...Ch. 1.4 - Trigonometric identities 29. Prove that sec=1cos.Ch. 1.4 - Trigonometric identities 30. Prove that...Ch. 1.4 - Trigonometric identities 31. Prove that tan2 + 1...Ch. 1.4 - Trigonometric identities 32. Prove that...Ch. 1.4 - Trigonometric identities 33. Prove that sec (/2 )...Ch. 1.4 - Trigonometric identities 34. Prove that sec (x + )...Ch. 1.4 - Prob. 35ECh. 1.4 - Prob. 36ECh. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Solving trigonometric equations Solve the...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Inverse sines and cosines Without using a...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Right-triangle relationships Draw a right triangle...Ch. 1.4 - Identities Prove the following identities. 63....Ch. 1.4 - Prob. 64ECh. 1.4 - Prob. 65ECh. 1.4 - Prob. 66ECh. 1.4 - Evaluating inverse trigonometric functions Without...Ch. 1.4 - Prob. 68ECh. 1.4 - Evaluating inverse trigonometric functions Without...Ch. 1.4 - Prob. 70ECh. 1.4 - Prob. 71ECh. 1.4 - Evaluating inverse trigonometric functions Without...Ch. 1.4 - Evaluating inverse trigonometric functions Without...Ch. 1.4 - Prob. 74ECh. 1.4 - Right-triangle relationships Use a right triangle...Ch. 1.4 - Right-triangle relationships Use a right triangle...Ch. 1.4 - Right-triangle relationships Use a right triangle...Ch. 1.4 - Right-triangle relationships Use a right triangle...Ch. 1.4 - Right-triangle relationships Use a right triangle...Ch. 1.4 - Prob. 80ECh. 1.4 - Right-triangle pictures Express in terms of x...Ch. 1.4 - Right-triangle pictures Express in terms of x...Ch. 1.4 - Explain why or why not Determine whether the...Ch. 1.4 - One function gives all six Given the following...Ch. 1.4 - One function gives all six Given the following...Ch. 1.4 - One function gives all six Given the following...Ch. 1.4 - One function gives all six Given the following...Ch. 1.4 - Prob. 88ECh. 1.4 - Amplitude and period Identify the amplitude and...Ch. 1.4 - Prob. 90ECh. 1.4 - Amplitude and period Identify the amplitude and...Ch. 1.4 - Graphing sine and cosine functions Beginning with...Ch. 1.4 - Graphing sine and cosine functions Beginning with...Ch. 1.4 - Graphing sine and cosine functions Beginning with...Ch. 1.4 - Graphing sine and cosine functions Beginning with...Ch. 1.4 - Prob. 96ECh. 1.4 - Designer functions Design a sine function with the...Ch. 1.4 - Field goal attempt Near the end of the 1950 Rose...Ch. 1.4 - A surprising result The Earth is approximately...Ch. 1.4 - Daylight function for 40 N Verify that the...Ch. 1.4 - Block on a spring A light block hangs at rest from...Ch. 1.4 - Prob. 102ECh. 1.4 - Ladders Two ladders of length a lean against...Ch. 1.4 - Pole in a corner A pole of length L is carried...Ch. 1.4 - Little-known fact The shortest day of the year...Ch. 1.4 - Viewing angles An auditorium with a flat floor has...Ch. 1.4 - Area of a circular sector Prove that the area of a...Ch. 1.4 - Law of cosines Use the figure to prove the law of...Ch. 1.4 - Law of sines Use the figure to prove the law of...Ch. 1 - Explain why or why not Determine whether the...Ch. 1 - Domain and range Find the domain and range of the...Ch. 1 - Equations of lines In each part below, find an...Ch. 1 - Prob. 4RECh. 1 - Graphing absolute value Consider the function f(x)...Ch. 1 - Function from words Suppose you plan to take a...Ch. 1 - Graphing equations Graph the following equations....Ch. 1 - Root functions Graph the functions f(x) = x1/3 and...Ch. 1 - Prob. 9RECh. 1 - Prob. 10RECh. 1 - Boiling-point function Water boils at 212 F at sea...Ch. 1 - Publishing costs A small publisher plans to spend...Ch. 1 - Prob. 13RECh. 1 - Shifting and scaling The graph of f is shown in...Ch. 1 - Composite functions Let f(x) = x3, g(x) = sin x,...Ch. 1 - Composite functions Find functions f and g such...Ch. 1 - Simplifying difference quotients Evaluate and...Ch. 1 - Simplifying difference quotients Evaluate and...Ch. 1 - Simplifying difference quotients Evaluate and...Ch. 1 - Simplifying difference quotients Evaluate and...Ch. 1 - Symmetry Identify the symmetry (if any) in the...Ch. 1 - Prob. 22RECh. 1 - Prob. 23RECh. 1 - Prob. 24RECh. 1 - Prob. 25RECh. 1 - Existence of inverses Determine the largest...Ch. 1 - Finding inverses Find the inverse on the specified...Ch. 1 - Prob. 28RECh. 1 - Prob. 29RECh. 1 - Graphing sine and cosine functions Use shifts and...Ch. 1 - Designing functions Find a trigonometric function...Ch. 1 - Prob. 32RECh. 1 - Matching Match each function af with the...Ch. 1 - Prob. 34RECh. 1 - Prob. 35RECh. 1 - Inverse sines and cosines Evaluate or simplify the...Ch. 1 - Inverse sines and cosines Evaluate or simplify the...Ch. 1 - Inverse sines and cosines Evaluate or simplify the...Ch. 1 - Inverse sines and cosines Evaluate or simplify the...Ch. 1 - Inverse sines and cosines Evaluate or simplify the...Ch. 1 - Prob. 41RECh. 1 - Prob. 42RECh. 1 - Right triangles Given that =sin11213, evaluate cos...Ch. 1 - Prob. 44RECh. 1 - Prob. 45RECh. 1 - Right-triangle relationships Draw a right triangle...Ch. 1 - Prob. 47RECh. 1 - Right-triangle relationships Draw a right triangle...Ch. 1 - Prob. 49RECh. 1 - Prob. 50RECh. 1 - Right-triangle relationships Draw a right triangle...Ch. 1 - Prob. 52RE
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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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