Mathematics, 06.11.2019 19:31 courtneygreenwood66
Consider diffusion inside an enclosed circular tube. let its length (circumference) be 2l. let x denote the arc length parameter where −l ≤ x ≤ l. then the concentration of the diffusing substance satisfies ut = kuxx for − l ≤ x ≤ l u(−l, t) = u(l, t) and ux (−l, t) = ux (l, t). these are called periodic boundary conditions. (a) show that the eigenvalues are λ = (nπ/l) 2 for n = 0, 1, 2, . (b) show that the concentration is u(x, t) = 1 2 a0 +[infinity] n=1 an cos nπx l + bn sin nπx l e−n2π2kt/l 2 .
Answers: 1
Mathematics, 20.06.2019 18:02
40 points for your own answer! highschool math! george is folding a piece of paper to make an origami figure. each time he folds the paper, the thickness of the paper is doubled. the paper starts out flat, with a thickness of 1 millimeter. a. write a list of six ordered pairs showing the output as the thickness of the paper when the input is the number of times it is folded. explain how you came up with your ordered pairs. b. is this relation a function? explain why or why not using the ordered pairs you came up with in part a.
Answers: 2
Mathematics, 21.06.2019 19:00
How can you tell when x and y are not directly proportional?
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Mathematics, 21.06.2019 23:30
Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?
Answers: 1
Mathematics, 22.06.2019 00:00
Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?
Answers: 2
Consider diffusion inside an enclosed circular tube. let its length (circumference) be 2l. let x den...
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