5. The problem may be a challenging problem. We define and our goal is to show...
Question 5. Let f(2) = for z e H4 = {z : Im z > 0}, the open upper half-plane of C. 2+i [2]a) Show that f maps H4 into the open unit disc |2| < 1. Hint: compute |f(2)|² for z e H4. [3]b) Show that ƒ maps the boundary of H onto the boundary of the disc |2| <1 minus one point. What point is missed?
Problem,4 Verify that w = f(z) = (z? 1)1/2 maps the upper half-plane Inn(z) > 0 onto the upper half-plane Im(w) > 0 slit along the segment from 0 to i, a nonpolygonal region. (Use the principal square root throughout.) Hint: The desired non-polygonal region can be obtained as a "limit" of a sequence of polygonal regions.) Problem,4 Verify that w = f(z) = (z? 1)1/2 maps the upper half-plane Inn(z) > 0 onto the upper half-plane Im(w) > 0...
5. Prove that f(z) = (2+1/2) is a conformal map from the half-disc {z = x +iy : 2< 1, y >0} to the upper half-plane. (Hint: The equation f(z) = w reduces to the quadratic equation z2 + 2wz +1 = 0, which has two distinct roots in C whenever w # £1. This is certainly the case if WE H.
Problem A.5. Let D be a region in the complex plane. (a) State Green's theorem in terms of f(2)u(, y) + iv(x, y),z-+ iy, and (b) Prove the following case of Morera's theorem: If f is continuously differentiable 0 for every circle γ in D, then f is analytic in D. Hint: in D and J,f(z)dz Use part (a).
(a) Let u: R2R be a harmonic function. Show that the function v: R2R defined by is also harmonic. (b) Show that the tranformation maps the positive quadrant Q+-[(x,y): x > 0&y to the upper half plane c)Find the Dirichlet Green function for the positive quadrant + (a) Let u: R2R be a harmonic function. Show that the function v: R2R defined by is also harmonic. (b) Show that the tranformation maps the positive quadrant Q+-[(x,y): x > 0&y to...
Please show all work Show that F= + X0, +99, + (x+y). (where Problem 1. V -0) satisfies the equation v'(V°F) - 0 videnotes the operator ax ay? Problem 2. Given: Eu - (1-0) ReZ-(1 +vby Im Z Ev - 2 Im Z - (1 +) y Re Z Show that these expressions for the displacements, u and y, are consistent with Hooke's law equations. (Plane stress): Ex -0,-voy E, -, -vo E_Y = ? 2(1+0) Problem 3. For a...
plz help me solve the question. plz dont copy anyother wrong answer. Ouestion 2. 2/2 -Throughout this question, z E C \ R and we define do (a) Locate and classify all singularities in the complex plane of Determine any associated residues (b) Evaluate Φ(z) by completing the contour in the upper half-plane. (c) Evaluate Ф(z) by completing the contour in the lower half-plane. (d) Verify that your answers to (b) and (c) are the same. (e) If r e...
12.7. Show that without the condition that u remains bounded, the Dirichlet problem for the upper half-plane y >0, oldo has infinitely many solutions. What is the unique bounded solu- tion of this problem? 12.7. Show that without the condition that u remains bounded, the Dirichlet problem for the upper half-plane y >0, oldo has infinitely many solutions. What is the unique bounded solu- tion of this problem?
Problem 5. Suppose that f: +C is analytic on an open set 12 containing the closed half plane H = {2€ C: Im(x) > 0} and that there is a finite constant M with f() < M for all z H. 1. Show that da = f(i) x² +1 +00 2. Show that if o is a point in C with Im(a) > 0, then I (a) Im(a)' 22-2Re(a)x+ lajar (3) deduce sin (Bx) where 870
4. We have n statistical units. For unit i, we have (x; yi), for i 1,2,...,n. We used the least squares line to obtain the estimated regression line bobi . (a) Show that the centroid (z, y) is a point on the least squares line, where x-(1/n) Σ-Χί and у-(1/ n) Σ|-1 yi. (Hint: Evaluate the line at x x.) (b) In the suggested exercises, we showed that e,-0 and where e is the ith residual, that is e -y...