Solve the following boundary value problem. ut=9uxx, 0 0; u, (0,t) ux (3,t) = 0, u(x,0) = 9 cos O A. Select the correct choice below and fill in the answer boxes to complete your choice. (Type exact answers, using as needed.) O B. O C. O D. ao The solution is of the form u(x,t) = + 2 u(x,t) = u(x,t) = COS TX u(x,t) = The solution is of the form u(x,t) = b₁ exp n=1 sin 3xx. sin ™X- u(x,t)= cos 3xx. 00 The solution is of the form u(x,t) = Σb, exp n=1 cos 3Tx. cos TX- 00 cos The solution is of the form u(x,t) = 2 Σ an exp n=1 ao cos (²3TX) ∞ + 2 an exp n=1 (22) (TX) nkt nлx L n2 KỈ 2 sin - 5 cos sin nkt COS nxx L Μπχ L cos where L= where L = where L = ΠπΧ L , k = , where L= k= , b₂ = , b₁ = k= ao = , b4= b3 = , ao = a₁ = a3 = and bn = and b₁ = a₂ = a4= and an = otherwise. The solution is otherwise. The solution is otherwise. The solution is , and an = otherwise. The solution is
Solve the following boundary value problem. ut=9uxx, 0 0; u, (0,t) ux (3,t) = 0, u(x,0) = 9 cos O A. Select the correct choice below and fill in the answer boxes to complete your choice. (Type exact answers, using as needed.) O B. O C. O D. ao The solution is of the form u(x,t) = + 2 u(x,t) = u(x,t) = COS TX u(x,t) = The solution is of the form u(x,t) = b₁ exp n=1 sin 3xx. sin ™X- u(x,t)= cos 3xx. 00 The solution is of the form u(x,t) = Σb, exp n=1 cos 3Tx. cos TX- 00 cos The solution is of the form u(x,t) = 2 Σ an exp n=1 ao cos (²3TX) ∞ + 2 an exp n=1 (22) (TX) nkt nлx L n2 KỈ 2 sin - 5 cos sin nkt COS nxx L Μπχ L cos where L= where L = where L = ΠπΧ L , k = , where L= k= , b₂ = , b₁ = k= ao = , b4= b3 = , ao = a₁ = a3 = and bn = and b₁ = a₂ = a4= and an = otherwise. The solution is otherwise. The solution is otherwise. The solution is , and an = otherwise. The solution is
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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