Calculus
11th Edition
ISBN: 9780357246412
Author: Ron Larson; Bruce H. Edwards
Publisher: Cengage Limited
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Chapter 1.3, Problem 111E
To determine
To prove: The expression
and all
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Find a formula for a function f that satisfies the following conditions.
lim f(x) = 0
lim f (x) = -0
f(8) = 0
lim f (x) = oo
lim f (x) = -0
f(-1) =
10
9 - x
f (x) =
22 (x – 8)
-
8 - x
f (x) =
교교 (x - 9)
8 - x
f (x) =
12 (x – 8)
9 - x
f (x) =
2? (x – 9)
O none of these
6) Find two functions f(z) and g(z) such that lim f(z) and lim g(z) do not exist
but lim [f(x) + g()] does exist.
2/2
" (Sum Rule): Suppose f: ℝⁿ → ℝᵐ and g: ℝⁿ → ℝᵐ are functions, and let a ∈ ℝⁿ and b, c ∈ ℝᵐ be points. If lim(x→a) f(x) = b and lim(x→a) g(x) = c, then lim(x→a) (f(x) + g(x)) = b + c.
Proof: Assume that lim(x→a) f(x) = b and lim(x→a) g(x) = c. Let ε > 0 be arbitrary. Then there exists δ₁ > 0 such that for x ∈ Dom(f) with d(x,a) < δ₁, we have ||f(x) - b|| < ε/2 (Equation 1.9). Similarly, there exists δ₂ > 0 such that for x ∈ Dom(g) with d(x,a) < δ₂, we have ||g(x) - c|| < ε/2 (Equation 1.10).
Take δ := min(δ₁, δ₂) and let x ∈ Dom(f + g) satisfy d(x,a) < δ. Since x ∈ Dom(f) and d(x,a) < δ₁, Equation 1.9 holds. Furthermore, x ∈ Dom(g) and d(x,a) < δ₂, so Equation 1.10 applies. We can combine these inequalities:
||f(x) + g(x) - (b + c)|| = ||(f(x) - b) + (g(x) - c)|| ≤ ||f(x) - b|| + ||g(x) - c|| < ε/2 + ε/2 = ε.
This shows that for all x ∈ Dom(f + g) with d(x,a) < δ, we have ||f(x) + g(x) - (b + c)|| < ε. Therefore, f(x) + g(x) → b + c as x → a."
I…
Chapter 1 Solutions
Calculus
Ch. 1.1 - CONCEPT CHECK Precalculus and Calculus Describe...Ch. 1.1 - CONCEPT CHECK Secant and Tangent Lines Discuss the...Ch. 1.1 - Precalculus or Calculus In Exercises 3-6.decide...Ch. 1.1 - Precalculus or Calculus In Exercises 3-6.decide...Ch. 1.1 - Precalculus or Calculus In Exercises 3-6.decide...Ch. 1.1 - Precalculus or Calculus In Exercises 3-6.decide...Ch. 1.1 - Secant Lines Consider the function f(x)=x and the...Ch. 1.1 - Secant Lines Consider the function f(x) = 6x x2...Ch. 1.1 - Approximating Area Use the rectangles in each...Ch. 1.1 - HOW DO YOU SEE IT? How would you describe the...
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Use the graph of f to identify...Ch. 1.2 - Prob. 73ECh. 1.2 - Prob. 74ECh. 1.2 - Prob. 75ECh. 1.2 - Prob. 76ECh. 1.2 - Prob. 77ECh. 1.2 - Prob. 78ECh. 1.2 - Evaluating Limits Use a graphing utility to...Ch. 1.2 - Prob. 80ECh. 1.2 - Proof Prove that if the limit of f(x) as x...Ch. 1.2 - Prob. 82ECh. 1.2 - Prob. 83ECh. 1.2 - Prob. 84ECh. 1.2 - Inscribe a rectangle of base b and height h in a...Ch. 1.2 - Prob. 86ECh. 1.2 - Estimating a Limit Numerically In Exercises 5-10,...Ch. 1.2 - Estimating a Limit Numerically In Exercises 5-10,...Ch. 1.3 - CONCEPT CHECK Polynomial Function Describe how to...Ch. 1.3 - Prob. 2ECh. 1.3 - Squeeze Theorem In your own words, explain the...Ch. 1.3 - Prob. 4ECh. 1.3 - Prob. 5ECh. 1.3 - Finding a Limit In Exercises 5-22. find the limit....Ch. 1.3 - Prob. 7ECh. 1.3 - Finding a Limit In Exercises 5-22. find the limit....Ch. 1.3 - Prob. 9ECh. 1.3 - Prob. 12ECh. 1.3 - Prob. 13ECh. 1.3 - Prob. 14ECh. 1.3 - Prob. 11ECh. 1.3 - Prob. 10ECh. 1.3 - Prob. 15ECh. 1.3 - Finding a Limit In Exercises 5-22, find the limit....Ch. 1.3 - Prob. 17ECh. 1.3 - Prob. 18ECh. 1.3 - Prob. 19ECh. 1.3 - Prob. 20ECh. 1.3 - Prob. 21ECh. 1.3 - Finding a Limit In Exercises 5-22, find the limit....Ch. 1.3 - Finding Limits In Exercises 23-26, Find the...Ch. 1.3 - Finding Limits In Exercises 23-26, Find the...Ch. 1.3 - Finding Limits In Exercises 23-26, Find the...Ch. 1.3 - Prob. 26ECh. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 28ECh. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 32ECh. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 34ECh. 1.3 - Prob. 35ECh. 1.3 - Prob. 36ECh. 1.3 - Prob. 37ECh. 1.3 - Evaluating Limits In Exercises 37-40, use the...Ch. 1.3 - Evaluating Limits In Exercises 37-40, use the...Ch. 1.3 - Evaluating Limits In Exercises 37-40, use the...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Finding a Limit In Exercises 41-46, write a...Ch. 1.3 - Prob. 47ECh. 1.3 - Prob. 48ECh. 1.3 - Finding a Limit In Exercises 4762, find the limit....Ch. 1.3 - Finding a Limit In Exercises 4762, find the limit....Ch. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Prob. 55ECh. 1.3 - Prob. 56ECh. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Prob. 58ECh. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Prob. 61ECh. 1.3 - Finding a Limit In Exercises 47-62, find the...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 71ECh. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 73ECh. 1.3 - Finding a Limit of a Trigonometric Function In...Ch. 1.3 - Prob. 75ECh. 1.3 - Prob. 76ECh. 1.3 - Prob. 77ECh. 1.3 - Prob. 78ECh. 1.3 - Prob. 79ECh. 1.3 - Prob. 80ECh. 1.3 - Prob. 81ECh. 1.3 - Prob. 82ECh. 1.3 - Prob. 83ECh. 1.3 - Finding a Limit In Exercises 83-90, find...Ch. 1.3 - Prob. 85ECh. 1.3 - Finding a Limit In Exercises 83-90, find...Ch. 1.3 - Prob. 87ECh. 1.3 - Prob. 88ECh. 1.3 - Prob. 89ECh. 1.3 - Prob. 90ECh. 1.3 - Using the Squeeze Theorem In Exercises 91 and 92,...Ch. 1.3 - Using the Squeeze Theorem In Exercises 91 and 92,...Ch. 1.3 - Using the Squeeze Theorem In Exercises 93-96, use...Ch. 1.3 - Using the Squeeze Theorem In Exercises 93-96, use...Ch. 1.3 - Prob. 95ECh. 1.3 - Prob. 96ECh. 1.3 - Functions That Agree at All but One Point (a) In...Ch. 1.3 - Prob. 98ECh. 1.3 - Prob. 99ECh. 1.3 - HOW DO YOU SEE IT? 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(b) Use your...Ch. 1.4 - CONCEPT CHECK Continuity In your own words,...Ch. 1.4 - Prob. 2ECh. 1.4 - Prob. 3ECh. 1.4 - Prob. 4ECh. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Limits and Continuity In Exercises 5-10, use the...Ch. 1.4 - Prob. 11ECh. 1.4 - Prob. 12ECh. 1.4 - Prob. 13ECh. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Prob. 17ECh. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Prob. 21ECh. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Prob. 23ECh. 1.4 - Prob. 24ECh. 1.4 - Finding a Limit In Exercises 11-30, find the limit...Ch. 1.4 - Prob. 26ECh. 1.4 - Prob. 27ECh. 1.4 - Prob. 28ECh. 1.4 - Prob. 29ECh. 1.4 - Prob. 30ECh. 1.4 - Continuity of a Function In Exercises 31-34,...Ch. 1.4 - Continuity of a Function In Exercises 31-34,...Ch. 1.4 - Continuity of a Function In Exercises 31-34,...Ch. 1.4 - Continuity of a Function In Exercises 31-34,...Ch. 1.4 - Continuity on a Closed Interval In Exercises...Ch. 1.4 - Continuity on a Closed Interval In Exercises...Ch. 1.4 - Continuity on a Closed Interval In Exercises...Ch. 1.4 - Continuity on a Closed Interval In Exercises...Ch. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Prob. 40ECh. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Prob. 42ECh. 1.4 - Prob. 43ECh. 1.4 - Prob. 44ECh. 1.4 - Prob. 45ECh. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Prob. 49ECh. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Prob. 53ECh. 1.4 - Removable and Nonremovable Discontinuities In...Ch. 1.4 - Prob. 55ECh. 1.4 - Prob. 56ECh. 1.4 - Prob. 57ECh. 1.4 - Prob. 58ECh. 1.4 - Prob. 59ECh. 1.4 - Making a Function Continuous In Exercises 59-64,...Ch. 1.4 - Making a Function Continuous In Exercises 59-64,...Ch. 1.4 - Making a Function Continuous In Exercises 59-64,...Ch. 1.4 - Making a Function Continuous In Exercises 5964....Ch. 1.4 - Making a Function Continuous In Exercises 59-64,...Ch. 1.4 - Prob. 65ECh. 1.4 - Prob. 66ECh. 1.4 - Prob. 67ECh. 1.4 - Prob. 68ECh. 1.4 - Continuity of a Composite Function In Exercises...Ch. 1.4 - Prob. 70ECh. 1.4 - Prob. 71ECh. 1.4 - Prob. 72ECh. 1.4 - Prob. 73ECh. 1.4 - Prob. 74ECh. 1.4 - Prob. 75ECh. 1.4 - Prob. 76ECh. 1.4 - Prob. 77ECh. 1.4 - Testing for Continuity In Exercises 75-82,...Ch. 1.4 - Prob. 79ECh. 1.4 - Testing for Continuity In Exercises 75-82,...Ch. 1.4 - Prob. 81ECh. 1.4 - Prob. 82ECh. 1.4 - Prob. 83ECh. 1.4 - Existence of a Zero In Exercises 83-86, explain...Ch. 1.4 - Existence of a Zero In Exercises 83-86, explain...Ch. 1.4 - Existence of a Zero In Exercises 83-86, explain...Ch. 1.4 - Prob. 87ECh. 1.4 - Prob. 88ECh. 1.4 - Prob. 89ECh. 1.4 - Using the Intermediate Value Theorem In Exercises...Ch. 1.4 - Prob. 91ECh. 1.4 - Prob. 92ECh. 1.4 - Prob. 93ECh. 1.4 - Prob. 94ECh. 1.4 - Using the Intermediate Value Theorem In Exercises...Ch. 1.4 - Using the Intermediate Value Theorem In Exercises...Ch. 1.4 - Prob. 97ECh. 1.4 - Prob. 98ECh. 1.4 - Prob. 99ECh. 1.4 - Prob. 100ECh. 1.4 - Prob. 101ECh. 1.4 - Prob. 102ECh. 1.4 - Prob. 103ECh. 1.4 - Prob. 104ECh. 1.4 - Prob. 105ECh. 1.4 - Prob. 106ECh. 1.4 - Prob. 107ECh. 1.4 - True or False? In Exercises 105-110. determine...Ch. 1.4 - True or False? In Exercises 105-110. determine...Ch. 1.4 - Prob. 110ECh. 1.4 - Prob. 111ECh. 1.4 - HOW DO YOU SEE IT? Every day you dissolve 28...Ch. 1.4 - Prob. 113ECh. 1.4 - Prob. 114ECh. 1.4 - Dj Vu At 8:00 a.m. on Saturday, a nun begins...Ch. 1.4 - Volume Use the Intermediate Value Theorem to show...Ch. 1.4 - Prob. 117ECh. 1.4 - Prob. 118ECh. 1.4 - Prob. 119ECh. 1.4 - Signum Function The signum function is defined by...Ch. 1.4 - Prob. 121ECh. 1.4 - Creating Models A swimmer crosses a pool of width...Ch. 1.4 - Making a Function Continuous Find all values of c...Ch. 1.4 - Prob. 124ECh. 1.4 - Prob. 125ECh. 1.4 - Prob. 126ECh. 1.4 - Prob. 127ECh. 1.4 - Prob. 128ECh. 1.4 - Prob. 129ECh. 1.4 - Prob. 130ECh. 1.5 - Infinite Limit In your own words, describe the...Ch. 1.5 - Prob. 2ECh. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Prob. 6ECh. 1.5 - Prob. 7ECh. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Determining Infinite Limits from a Graph In...Ch. 1.5 - Numerical and Graphical Analysis In Exercises...Ch. 1.5 - Numerical and Graphical Analysis In Exercises...Ch. 1.5 - Prob. 13ECh. 1.5 - Prob. 14ECh. 1.5 - Prob. 15ECh. 1.5 - Prob. 16ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 18ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 20ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 22ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 24ECh. 1.5 - Prob. 25ECh. 1.5 - Prob. 26ECh. 1.5 - Prob. 27ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 30ECh. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Finding Vertical Asymptotes In Exercises 17-32....Ch. 1.5 - Prob. 33ECh. 1.5 - Prob. 34ECh. 1.5 - Prob. 35ECh. 1.5 - Prob. 36ECh. 1.5 - Finding a One-Sided Limit In Exercises 37-50, find...Ch. 1.5 - Prob. 38ECh. 1.5 - Finding a One-Sided Limit In Exercises 37-50, find...Ch. 1.5 - Prob. 40ECh. 1.5 - Prob. 41ECh. 1.5 - Prob. 42ECh. 1.5 - Finding a One-Sided Limit In Exercises 37-50, find...Ch. 1.5 - Finding a One-Sided Limit In Exercises 37-50, find...Ch. 1.5 - Prob. 45ECh. 1.5 - Finding a One-Sided Limit In Exercises 37-50, find...Ch. 1.5 - Prob. 47ECh. 1.5 - Prob. 48ECh. 1.5 - Prob. 49ECh. 1.5 - Prob. 50ECh. 1.5 - Prob. 51ECh. 1.5 - Prob. 52ECh. 1.5 - Prob. 53ECh. 1.5 - Prob. 54ECh. 1.5 - Prob. 55ECh. 1.5 - Prob. 56ECh. 1.5 - Prob. 57ECh. 1.5 - Relativity According to the theory of relativity,...Ch. 1.5 - Prob. 59ECh. 1.5 - Prob. 60ECh. 1.5 - Rate of Change A 25-foot ladder is leaning against...Ch. 1.5 - Average Speed On a trip of d miles to another...Ch. 1.5 - Numerical and Graphical Analysis Consider the...Ch. 1.5 - Numerical and Graphical Reasoning A crossed belt...Ch. 1.5 - Prob. 65ECh. 1.5 - True or False? 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In Exercises 65-68, determine...Ch. 1.5 - Prob. 68ECh. 1.5 - Finding Functions Find functions f and g such that...Ch. 1.5 - Prob. 70ECh. 1.5 - Prob. 71ECh. 1.5 - Prob. 72ECh. 1.5 - Prob. 73ECh. 1.5 - Prob. 74ECh. 1.5 - Prob. 75ECh. 1.5 - Prob. 76ECh. 1 - Precalculus or Calculus In Exercises 1 and 2,...Ch. 1 - Precalculus or Calculus In Exercises 1 and 2,...Ch. 1 - Prob. 3RECh. 1 - Estimating a Limit Numerically In Exercises 3 and...Ch. 1 - Prob. 5RECh. 1 - Prob. 6RECh. 1 - Using the Definition of a Limit In Exercises 710,...Ch. 1 - Prob. 8RECh. 1 - Prob. 9RECh. 1 - Prob. 10RECh. 1 - Finding a Limit In Exercises 11-28, find the...Ch. 1 - Finding a Limit In Exercises 11-28, Find the...Ch. 1 - Prob. 13RECh. 1 - Prob. 15RECh. 1 - Prob. 14RECh. 1 - Prob. 16RECh. 1 - Prob. 17RECh. 1 - Prob. 18RECh. 1 - Prob. 19RECh. 1 - Prob. 20RECh. 1 - Prob. 21RECh. 1 - Prob. 22RECh. 1 - Prob. 23RECh. 1 - Prob. 24RECh. 1 - Finding a Limit In Exercises 1128, find the limit....Ch. 1 - Prob. 26RECh. 1 - Prob. 27RECh. 1 - Prob. 28RECh. 1 - Prob. 29RECh. 1 - Prob. 30RECh. 1 - Prob. 31RECh. 1 - Evaluating a Limit In Exercises 29-32, evaluate...Ch. 1 - Prob. 33RECh. 1 - Graphical, Numerical, and Analytic Analysis In...Ch. 1 - Prob. 35RECh. 1 - Prob. 36RECh. 1 - Free-Falling Object In Exercises 37 and 38. use...Ch. 1 - Free-Falling Object In Exercises 37 and 38. use...Ch. 1 - Prob. 39RECh. 1 - Prob. 40RECh. 1 - Prob. 41RECh. 1 - Finding a Limit In Exercises 39-50, find the limit...Ch. 1 - Finding a Limit In Exercises 39-50, find the limit...Ch. 1 - Prob. 44RECh. 1 - Prob. 45RECh. 1 - Prob. 46RECh. 1 - Prob. 47RECh. 1 - Prob. 48RECh. 1 - Prob. 49RECh. 1 - Prob. 50RECh. 1 - Prob. 51RECh. 1 - Prob. 52RECh. 1 - Prob. 53RECh. 1 - Prob. 54RECh. 1 - Prob. 55RECh. 1 - Prob. 56RECh. 1 - Prob. 57RECh. 1 - Prob. 58RECh. 1 - Prob. 59RECh. 1 - Prob. 60RECh. 1 - Prob. 61RECh. 1 - Prob. 62RECh. 1 - Prob. 63RECh. 1 - Prob. 64RECh. 1 - Prob. 65RECh. 1 - Prob. 66RECh. 1 - Using the Intermediate Value Theorem Use the...Ch. 1 - Prob. 68RECh. 1 - Prob. 69RECh. 1 - Prob. 70RECh. 1 - Prob. 71RECh. 1 - Determining Infinite Limits In Exercises 71 and...Ch. 1 - Prob. 73RECh. 1 - Prob. 74RECh. 1 - Prob. 75RECh. 1 - Prob. 76RECh. 1 - Prob. 77RECh. 1 - Prob. 78RECh. 1 - Finding a One-Sided Limit In Exercises 79-88, find...Ch. 1 - Prob. 80RECh. 1 - Prob. 81RECh. 1 - Prob. 82RECh. 1 - Prob. 83RECh. 1 - Prob. 84RECh. 1 - Prob. 85RECh. 1 - Prob. 86RECh. 1 - Prob. 87RECh. 1 - Prob. 88RECh. 1 - Environment A utility company burns coal to...Ch. 1 - Perimeter Let P (x. y) be a point on the parabola...Ch. 1 - Area Let P(x, y) be a point on the parabola y=x2...Ch. 1 - Prob. 3PSCh. 1 - Tangent Line Let P (3, 4) be a point on the circle...Ch. 1 - Tangent Line Let P(5,12) be a point on the circle...Ch. 1 - Finding Values Find the values of the constants a...Ch. 1 - Prob. 7PSCh. 1 - Making a Function Continuous Find all values of...Ch. 1 - Choosing Graphs Consider the graphs of the four...Ch. 1 - Prob. 10PSCh. 1 - Limits and Continuity Sketch the graph of the...Ch. 1 - Escape Velocity To escape Earth's gravitational...Ch. 1 - Pulse Function For positive numbers ab, the pulse...Ch. 1 - Proof Let a be a nonzero constant. Prove that if...
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