(1 point) This problem is concerned with using Laplace transforms to solve PDEs. Given du ди...
— дt ! [points=4] Q4. Solve the heat equation subject to the given conditions: д?u ди 0<х «п, t> о дх2 ди ди - (0,t) = 0, - (п,t) = 0, t>0 дх дх и(x,0) = п - 3x
(1 point) Solve the boundary value problem by using the Laplace transform: 4 ²w дх2 d²w at2 ? x > 0, t> 0 w(0,t) = sin(8t), lim w(x, t) = 0, t> 0, X00 W(x,0) = 0, dw -(x,0) = 0, x > 0, дt First take the Laplace transform of the partial differential equation. Let W be the Laplace transform of w. Then W satisfies the ordinary differential equation W" = subject to W(0) = and limx→ W(x) =...
(1 point) Take the Laplace transform of the following initial value problem and solve for Y(8) = L{y(t)}; ſ1, 0<t<1 y" – 6y' - 27y= { O, 1<t y(0) = 0, y'(0) = 0 Y(8) = (1-e^(-s)(s(s^2-6s-27)) Now find the inverse transform: y(t) = (Notation: write uſt-c) for the Heaviside step function uct) with step at t = c.) Note: 1 | 1 s(8 – 9)(8 + 3) 36 6 10 + s $+37108 8-9
(1 point) Solve the boundary value problem by using the Laplace transform az w &w 16- dx2 x > 0, t> 0 at2 w(0,t) = 0, lim w(x, t) = 0, t> 0, X+0 w(x,0) = 2xe-*, dw F(x,0) = 0, x > 0, дt First take the Laplace transform of the partial differential equation. Let W be the Laplace transform of w. Then W satisfies the ordinary differential equation W" = subject to W(0) = and limxW(x) = Solve...
6. Solve an ODE Using Laplace Transforms: For this problem you are to use Laplace Transforms. Find the complete solution for the initial value problem yº+w2y = t +u.(t - Ttcost, y(0) = 1, y(0) = 0. Hint: Look carefully at the second forcing term and rewrite cost. You can solve this by brute force using the integral below. It would be a good exercise to make sure both approaches give the same Laplace transform. The integral The solution ſeat...
9. (a) Use the Tables of Fourier transforms, along with the operational theorems, to find the inverse Fourier transform of iw 45iw(iw2 (b) The function f(t) satisfies the integral equation: f(t)2 f(t - u) sgn(u) du — 6е" H(). Find the Fourier transform of the function f (t) and hence find the solution f(t) The sign function sgn(t) = 1 if t 0, 0 if t 0 and -1 if t < 0 H(t) is the Heaviside unit step function...
-16 points 17. Find the Laplace transform Y(s) of the solution of the given initial value problem. Then invert to find y(t). Write u for the Heaviside function that turns on at cnot u(t y"36y = e-2u y(0) 0 y'(O) = 0 Y(s) y(t) Submit Answer Save Progress Practice Another Version -16 points 17. Find the Laplace transform Y(s) of the solution of the given initial value problem. Then invert to find y(t). Write u for the Heaviside function that...
3. Solve the following integral equations using Laplace transforms. (a) (t)= te! - 2e x(u)e"du (b) y(t) 1 - sinht +(1+T)y(t - T)dT. netions 3. Solve the following integral equations using Laplace transforms. (a) (t)= te! - 2e x(u)e"du (b) y(t) 1 - sinht +(1+T)y(t - T)dT. netions
Problem 1: We are interested in solving a modified form of diffusion equation given below using Fourier transforms Fu(x, t) _ u(x, t) + g(x) =-a ди (x, t) The domain of the problem is-oo < x < oo and is 0 < t < oo . At time t = 0, the initial condition is given by u(x, 0) 0 a) Take the Fourier transform on x and show that the above PDE can be transformed into the following...
Question 7: Solve the entire problem using Laplace Transforms. Recall the DE for our two-vessel water clock ах - Ax, where A dt k(0)= DE IC: -1] Let X(s) denote the Laplace transform of x(t). Then x(s) = (sl-A)-1 (0) There is no forcing term, so this is just the zero-input or homogeneous solution. Solve for X(s) and record your answer in the answer template. The first component has been given for you Question 7: The solution in the transform...