16. Select if the following wavefunctions are normalized, normalizable or oints not normalizable. Normalized Normalizable Not normalizable 1/a(ex/a) evaluated at x from 0 to ∞ sqrt(Tt/2)ex2 evaluated from -o to 00 sqrt(2/e2a)(elax) evaluated at x from -оо to oo
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- A damping system with a negligibly small spring constant is modelled by x"+bx'=aebt with x(0)=0 and x'(0)=0 initial conditions Use the Laplace transform to determine the displacement of this system as a function of time in terms of a and b.In the case of E<v0 for a finite well defined by its potential, obtain the wave functions ψI, ψII, and ψIII by applying the relevant boundary conditions and the mathematical relations between the coefficients that decipher these functions.Let f(x) = 1/[π(1 + x2)], −∞< x < ∞ be the pdf of the Cauchy random variable X. Showthat E (X) does not exist. (hint: split into two integrals (−∞,0) and (0,∞))
- Show that if φ is continuously differentiable in a given region V and on itsboundary S, then∫S φ dS =∫V ∇φ dVConsider the IVP y''-y'=0 where y(0)=2 and y'(0)=3. Solve it using Laplace transformsLet X1 ... Xn i.i.d random variables with Xi ~ U(0,1). Find the pdf of Q = X1, X2, ... ,Xn. Note that first that -log(Xi) follows exponential distribuition.
- Compute the path integral of F = ⟨ y , x ⟩ along the line segment starting at ( 1 , 0 ) and ending at (3,1).Let yt = φyt−1 + et with et ∼ WN(0,σ2) and |φ| < 1. Consider the over-differenced process wt = (1 − L)yt.(i) What is the model followed by wt? (ii) Is wt invertible? (iii) Obtain V [wt] and compare its magnitude with V [yt] and hence comment on the impact of over-differencing on the variance of a stationary process.Show that the Dirichlet function f defined on [0 , 1] by f(x) = {1 if x is rational0 if x is irrationalis not Riemann integrable on [0 , 1]