The general solution to y'' - xy' + y = 0 is given by:
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A: 2y''-4y' =2xGeneral solution :2D2-4D = 0D(2D-4)=0 D = 0 2D-4 = 0 D=2 GENERAL SOLUTION :Y = C1e2X+C2
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Q: The integrating factor of the differential equation 2xy dx + (4y + 3x^2) dy = 0 is . Does not exist
A: Ist question was incomplete I have to do the second question Please repost ist question correctly
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The general solution to y'' - xy' + y = 0 is given by:
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- A marketing research group conducting a telephone survey must contact at least 150 wives and 120 husbands. It costs P100 to make a daytime call and (because of higher labor costs) P150 to make an evening call. On average, daytime calls reach wives 30% of the time, husbands 10% of the time, and neither of these 60% of the time, whereas evening calls reach wives 30% of the time, husbands 30% of the time, and neither of these 40% of the time. Staffing considerations mean that daytime calls must be less than or equal to half of the total calls made. How many should be interviewed at each period to minimize the cost of completing the survey? fomulate the LP Model; identify the decision variables used in the model; and determine the optimal solution using graphical method.How do I solve with elimination method and determine if these are independent/dependent and consistent/inconsistent?A construction company has a bid on two large construction projects. The president believes that the chances of winning the first contract is 55% and the chances of winning the second contract is 30% and that winning either contract is independent of winning the other. What are the chances the company will not win either contract?
- how many intergers solutions to x1 + x2 + x3 + x4 = 29 are there for which x1 ≥ 5, x2 ≥ 2, x3 ≥ 6 and x4 ≥ 5?The television show Lett3rs has been successful for many years. That show recently had a share of 19, which means, that among the TV sets in use, 19% were tuned to Lett3rs. An advertiser wants to verify that 19% share value by conducting its own survey, and a pilot survey begins with 10 households have TV sets in use at the time of a Lett3rs broadcast. If at most one household is tuned to Lett3rs, does it appear that the 19% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Lett3rs unusual?) A. no, it is not wrongB. yes, it is wrongAfter the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they liked the movie. Out of 25 adults, all but 8 said they liked the movie, whereas out of 100 teenagers, all but 24 said they liked the movie. Fill in the blanks below to make the most reasonable statement possible. At the movie premiere, _________ moviegoers liked the movie more. That is because only___% disliked the movie, whereas _____% of the ______________moviegoers disliked the movie. (adult/teenage). (%)
- In a rural area, there is a road that connects location X and location Y, however this road cannot be passed about 50% of the time due to floods. There is another route that goes to location Z. The road from location X to Z is only passable 75% of the time and the road from location Z to Y is only passable 70% of the time. Furthermore, if the road between location X and Z is passable, then the road travelling from Z to Y is passable 80% of the time. If the route from location X to Y to Z is passable, then the route directly from location X to Y is passable 80% of the time. What is the probability of travelling from location X to Y? If during the night a flood makes the road from X to Z impassable, what is the probability that the traveller can still travel from Z to Y? Please answer completely will give rating surelyA particular two-player game starts with a pile of diamonds and a pile of rubies. Onyour turn, you can take any number of diamonds, or any number of rubies, or an equalnumber of each. You must take at least one gem on each of your turns. Whoever takesthe last gem wins the game. For example, in a game that starts with 5 diamonds and10 rubies, a game could look like: you take 2 diamonds, then your opponent takes 7rubies, then you take 3 diamonds and 3 rubies to win the game.You get to choose the starting number of diamonds and rubies, and whether you gofirst or second. Find all starting configurations (including who goes first) with 8 gemswhere you are guaranteed to win. If you have to let your opponent go first, what arethe starting configurations of gems where you are guaranteed to win? If you can’t findall such configurations, describe the ones you do find and any patterns you see.One of your duties is the selection and disposal of boxes of obsolete files. According to regulations, ordinary files become obsolete after 24 months, confidential files after 36 months and classified files after 48 months. Which of the following boxes of files can be disposed of: A box containing ordinary files dated 26 months ago and classified files dated 34 months ago. A box containing ordinary files dated 38 months ago and confidential files dated 28 months ago.
- A manufacturing firm finds that 70% of its new hires turn out to be good workers, and 30% become poor workers. All current workers are given a reasoning test. Of the good workers, 85% pass the test, and 35% of poor workers pass it. Assume that the figures will hold true in the future. If the company makes the test part of its hiring procedure and only hires people who meet the previous requirements and pass the test, what percent of the new hires will turn out to be good workers?In comparing the average protein content µ1 and µ2 of two brands of dog food, a consumer testing service finds that fifty 5-pund packages of brand A dog food had an average protein content x̅1=11 ounces per package and a s.d of s1 = 1 ounce, while sixty-5 pound packages of brand B dog food has an average protein content x̅2=9ounces per package and a s.d of s2 = 0.5 ounce. A difference of 0.5 ounces is considered to be not sufficiently important to report as a consumer issue. Therefore, a decision was made to test the hypothesis.Vx (-y +2,22 +323, 2233) =? 0 (3y -3222, 223, -2 + 2) 0 (-3y +3X372, -332, 1 + 2x) 0 (2y +2224-423,1 + 22) 0 (-34-3222, 42,1 +22) 0 (-3y +322y2, -3'2, 1 + 2)