Complex Analysis (use the Liouville equation):
Complex Analysis (use the Liouville equation): Suppose that f(z)u, ) (, u) is an entire function such that 7u9n is bounded. Prove that fis constant Hint: Multiply f by an appropriate complex constant...
Suppose fis an entire function such that there is a number M such that Re(f(z)2 - Imf(z))2 s M for all z. Prove that f must bie Hint: Compare to exercises #8: if f and g are both entire, then so are f-g and gof. Find an appropriate g so that you may apply Liouville's theorem to the entire function gof
Complex Analysis: Suppose f(2) is an entire function and that there exists a real number Ro such that \f(2)] = 2l for any complex number z with [2] > Ro Prove that f is of the form f(x) = a + bz for all z E C.
Complex Analysis Need it ASAP Suppose f is an entire function. Show that any of the two criteria below imply that f is a constant function. (a) Imf(z) #0 for all z EC and Ref(z) is an entire function. [10] (b) -1 < Ref (2) <1 for all z E C. [8]
Problem 8. Let f(z) = u(x, y) iv(x, y) be an entire function with real and imaginary parts u(x, y) and v(x, y). Assume that the imaginary part is bounded v(x, y) < M for every z = x+ iy. Prove that f is a constant 1
real analysis hint 13 Suppose fis a continuous function on R', with period 1. Prove that lim Σ f(a)-| f(t) dt 0 for every irrational real number α. Hint: Do it first for f(t)= exp (2nikt), k = 0,±1, ±2, 4.13 Let 2 be the set of functions of form P(t)-Σ_NQC2nikt. The equality holds for functions in . For given ε > 0, there is a P E 2 such that llf-Plloo < ε. Then
10 points Suppose f is an entire function and there is a constant c such that Ref(z) < c for all z. Show that f is constant. (Hint: Consider exp(f(z)).]
Suppose f(z) is a holomorphic function in a domain U, and z0 ∈ U. Prove that f has a zero of order m at z0 if and only if f(z) = g(z)(z − z0)^m, where g(z) is holomorphic in U and g(z0) not equal to 0. Please prove both directions of the if and only if statement and use series expansion to prove. We have not learned calculus of residues yet.
complex analysis, cite all theorems used Let fcz) be an entire function and there exists a real number Ro such that Ifcail sizl for any complex number z 12/7RO Prove that f is of the form VZEC with f(Z)= arbe
Suppose is a bounded function for which there exists a partition such that . Prove: is a constant function f : a, b] →R We were unable to transcribe this imageL(P, f,a) = U(P, f,a) We were unable to transcribe this image
Consider the function f(z) = z/|z|. (a) Write f(z) in complex standard form f = u+iv. In other words, determine Re f(z) and Im f(z). (b) Use Mathematica to plot u and v. Hint: use command Plot3D. (c) Find the limit of f(z) as z approaches 0 along each of the following paths: • the negative side of the real axis, • the positive side of the real axis, • the negative side of the imaginary axis, • the positive...