Suppose fis an entire function such that there is a number M such that Re(f(z)2 -...
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 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.
7. Let f be an entire function. Suppose there exists € >0 such that f(2) > € for every 2 E C. Show that f is constant. (Hint: Apply Liouville's theorem to the function g(2) = 1/f().)
3. 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 E C and Ref (2) is an entire function. Imf (2) [10] (b) -1 < Ref(x) < 1 for all 2 € C. [8]
Please do 2 only
please do 2 only
Exercises (1) Compute for de and c ) da where is the ultime center at the origin and oriented once in the counterclockwise (2) Computer da, where I is the circle {: € C: 1:= 3) once in the counterclockwise direction (3) (Mean Value Property of Holomorphic Functions) Supposed w = f(e) is holomorphic on and inside the circle {: € C:- Prove that f(20) == f( 70 +re) de. (4) Under...
12. Suppose that fis analytic on a convex domain D and that Re(f ,(z)) > 0 for all z E D. Show that f is one-to-one on D. (Hint: /(z2) - sz) J,f'(w) dw, where is the line segment joining z1 to z2.)
12. Suppose that fis analytic on a convex domain D and that Re(f ,(z)) > 0 for all z E D. Show that f is one-to-one on D. (Hint: /(z2) - sz) J,f'(w) dw, where is the...
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]
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.
3. Suppose f is an entire function. Show that any of the two criteria below imply that f is a constant function. (a) Imf(x) #0 for all 2 € C and Ref(is an entire function. [10] (b) -1 < Ref(x) < 1 for all z e C. [8]
Let Ω be an open set and a E Ω with (the closed disc) D(a,p) Ω Let f є H(Q). We have proved that for any r 〈 ρ, f has a power series expansion in the open disc D(a,r) CO 0 where, for all n0,1,2 7l Here C is the positively oriented circle: z-a+pe.θ, 0-θ-2π. In particular, f has a Taylor series expansion in D(a, r): f" (a) 2-a 0 This results in two consequences (will be shown in...
(1) Suppose that f is entire and suppose there exists a constant M such that If(n)(z)| 〈 M for all z C. Show that f must be a polynomial of degree n.