Mathematics for Machine Technology
7th Edition
ISBN: 9781133281450
Author: John C. Peterson, Robert D. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 3A
Subtract
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Students have asked these similar questions
In Exercises 1-14, state whether each statement is true or
false. If false, give a reason.
1. The set of stores located in the state of Wyoming is a well-
defined set.
2. The set of the three best songs is a well-defined set.
3. maple = {oak, elm, maple, sycamore}
4{} cơ
5. {3, 6, 9, 12,...} and {2, 4, 6, 8, ...} are disjoint sets.
6. {Mercury, Venus, Earth, Mars} is an example of a set in
roster form.
7. {candle, picture, lamp} = {picture, chair, lamp }
8. {apple, orange, banana, pear} is equivalent to
{tomato, corn, spinach, radish}.
Exercises
Evaluate the following limits.
1. lim cot x/ln x
+01x
2. lim x² In x
+014
3. lim x*
x0+
4. lim (cos√√x)1/x
+014
5. lim x2/(1-cos x)
x10
6. lim e*/*
818
7. lim (secx - tan x)
x-x/2-
8. lim [1+(3/x)]*
x→∞0
In Exercises 1 through 3, let xo =
O and calculate P7(x) and R7(x).
1. f(x)=sin x, x in R.
2. f(x) = cos x, x in R.
3. f(x) = In(1+x), x≥0.
4. In Exercises 1, 2, and 3, for |x| 1, calculate a value of n such that P(x)
approximates f(x) to within 10-6.
5. Let (an)neN be a sequence of positive real numbers such that L =
lim (an+1/an) exists in R. If L < 1, show that an → 0. [Hint: Let
1111
L
Chapter 5 Solutions
Mathematics for Machine Technology
Ch. 5 - Express the mixed number 7316 as an improper...Ch. 5 - Add 15+213+41115 .Ch. 5 - Subtract 716332 .Ch. 5 - Multiply 56423 .Ch. 5 - Determine the length A in Figure 5-3. All...Ch. 5 - Determine the length B in Figure 5-3. All...Ch. 5 - Find the reciprocal of each of the fractions in...Ch. 5 - Find the reciprocal of each of the fractions in...Ch. 5 - Find the reciprocal of each of the fractions in...Ch. 5 - Find the reciprocal of each of the fractions in...
Ch. 5 - This casting in Figure 5-4 shows seven tapped...Ch. 5 - Bar stock is being cut on a lathe. The tool feeds...Ch. 5 - A groove 1516 inch deep is to be milled in a steel...Ch. 5 - This sheet metal section shown in Figure 5-5 has...Ch. 5 - The feed on a lathe is set for 164 inch. How many...Ch. 5 - How many complete pieces can be blanked from a...Ch. 5 - A slot is milled the full length of a steel plate...Ch. 5 - How many binding posts can be cut from a brass rod...Ch. 5 - A bar of steel 2314 feet long weighs 11012 pounds....Ch. 5 - A single-threaded (or single-start) square-thread...Ch. 5 - A double-threaded square-thread screw is shown in...
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- iation 7. Let f be continuous on [a, b] and differentiable on (a, b). If lim f'(x) xia exists in R, show that f is differentiable at a and f'(a) = lim f'(x). A similar result holds for b. x-a 8. In reference to Corollary 5.4, give an example of a uniformly continuous function on [0, 1] that is differentiable on (0, 1] but whose derivative is not bounded there. 9. Recall that a fixed point of a function f is a point c such that f(c) = c. (a) Show that if f is differentiable on R and f'(x)| x if x 1 and hence In(1+x) 0. 12. For 0 л/2. (Thus, as x л/2 from the left, cos x is never large enough for x+cosx to be greater than л/2 and cot x is never small enough for x + cot x to be less than x/2.)arrow_forward1. Show that f(x) = x3 is not uniformly continuous on R. 2. Show that f(x) = 1/(x-2) is not uniformly continuous on (2,00). 3. Show that f(x)=sin(1/x) is not uniformly continuous on (0,л/2]. 4. Show that f(x) = mx + b is uniformly continuous on R. 5. Show that f(x) = 1/x2 is uniformly continuous on [1, 00), but not on (0, 1]. 6. Show that if f is uniformly continuous on [a, b] and uniformly continuous on D (where D is either [b, c] or [b, 00)), then f is uniformly continuous on [a, b]U D. 7. Show that f(x)=√x is uniformly continuous on [1, 00). Use Exercise 6 to conclude that f is uniformly continuous on [0, ∞). 8. Show that if D is bounded and f is uniformly continuous on D, then fis bounded on D. 9. Let f and g be uniformly continuous on D. Show that f+g is uniformly continuous on D. Show, by example, that fg need not be uniformly con- tinuous on D. 10. Complete the proof of Theorem 4.7. 11. Give an example of a continuous function on Q that cannot be continuously extended to R. 12.…arrow_forwardcan I see the steps for how you got the same answers already provided for μ1->μ4. this is a homework that provide you answers for question after attempting it three triesarrow_forward
- 1. Prove that for each n in N, 1+2++ n = n(n+1)/2. 2. Prove that for each n in N, 13 +23+ 3. Prove that for each n in N, 1+3+5+1 4. Prove that for each n ≥ 4,2" -1, then (1+x)" ≥1+nx for each n in N. 11. Prove DeMoivre's Theorem: fort a real number, (cost+i sint)" = cos nt + i sinnt for each n in N, where i = √√-1.arrow_forwardPls help ASAParrow_forward2. Sam and Deb have a weekly net income of $1500. They have a pet dog. Their monthly expenses, not related to housing, are $2875. They have savings of $32 000. They are considering two housing options: Option 1: Renting a 2-bedroom condo for $1650 a month, plus utilities averaging $210 a month Option 2: Buying a 2-bedroom condo for a down payment of $24 500, bi-weekly mortgage payments of $1100, and a monthly condo fee of $475 a) Determine the monthly cost of each housing option. Factoring in other expenses not related to housing, which one can Sam and Deb afford? b) Suppose their dog falls ill and they have to pay $85 every week to cover veterinarian and medical expenses. Calculate the additional monthly expenses. How much money would be available for savings if they choose housing option 2?arrow_forward
- I bought sparrows at 3 for a penny, turtle doves at 2 for a penny, anddoves at 2 pence each. If I spent 30 pence buying 30 birds and boughtat least one of each kind of bird, how many birds of each kind did I buy?(This is a problem from Fibonacci’s Liber Abaci, 1202.)arrow_forward2. Jacob is going to college. He has a part-time job with take-home pay of $575 every two weeks. He has received a scholarship for $5500 for the year. Determine Jacob's total monthly income.arrow_forward1. Pira's expenses are $850 a month for rent and utilities, $52 a month for TV and Internet package, $90 a week for food, $110 a month for a bus pass, $25 a week for entertainment, and $85 every two weeks for miscellaneous expenses. a) Convert each expense to a monthly amount and represent each monthly amount as a percentage. b) Create a circle graph that shows the breakdown of the monthly expenses. c) Pira has an income of $1600/biweekly and is deciding whether a weeklong vacation to Florida would be within her budget. The cost of the trip is approximately $2000 per week. Would you recommend for her to take the one weeklong vacation? Explain.arrow_forward
- 4. Mason works at a part-time job earning $985 every two weeks. Mason's expenses are $750 a month for rent and utilities, $75 a month for her cell phone, $350 a month for food, $35 a week for entertainment, $310 a month for her car loan payment, and $65 every two weeks for miscellaneous expenses. How long will it take Mason to save $2000 for a vacation? Round your answer to the nearest month.arrow_forwardPls help ASAParrow_forwardPls help ASAParrow_forward
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