Notation: In what follows, let D = {z:z<1} and H = {z: Im(2) >0}, 6. Let...
5.3 Let F be an ordered field, let d > 0, and suppose that d does not have a square root in F. Let F(Vd) denote the set of all a+bvd, with a, b e F, where vd is a square root in some extension field of F (a) Show that F(Va) is a field. (b) Show how to define an ordering on FVa), with vd> 0, such that it becomes an ordered field
1. Let F(x, y, z) = (-y + ,2-2,2-y), and let S be the surface of the paraboloid 2 = 9-32 - v2 for 2 > 0. oriented by an upward pointing normal vector. Note that the boundary of S is C, the circle of radius 3 in the xy-plane. Verify Stokes' Theorem by computing both sides of the equality: (a) (1 Credit) || (D x F). ds (b) (1 Credit) $F. dr
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?
Exercise 3 Let f be an analytic function on D(0,1). Suppose that f(z) < 1 for all z € C and f() = 0. Show that G) . (Hint: use the function g(z) = f(2).)
5. Let A € Mnxn(C) with characteristic polynomial p(x) = cxºII-1(d; – x) and li + 0, Vi, a E Z>o. Show that if dim(ker(A))+k=n, then A= C2 for some complex matrix C.
5. Let f(x) = arctan(In x) for all x >0. A graph of y = f(x) is shown in the figure. (a) Find the formula for the derivative f'(x). Then explain how you can deduce from this formula that f is invertible. (b) Find the formula for f-1(x), the inverse of f. (c) What is the domain and range of f-1? (d) Sketch a graph of the function y=f-1(x). (e) Now determine the value of (F-1)(0) using your results from...
Given the network in fig., find v(t) for t>0. 2 A 1 H 4Ω 6 A 1Ω 0.03 F v (t) = cos sin
Use (part A) line integral directly then use (part B) Stokes'
Theorem
10. Let C be the triangle from (0, 0,0) to (2, 0, 0) to (0, 2, 1) to (0, 0, 0) which lies in the plane z 2 -Зугі + 4zj + 6x k, calculate | F . dr using Stokes's Theorem. If F(x, y, z) (b) 14 3 (c) 2 (d) 0 (e) None of these
10. Let C be the triangle from (0, 0,0) to (2,...
Let X be a random variable with CDF z<0 G()=/2 0 <IS2 z>2 1 Suppose Y = X2 is another random variable, find (a) P(1/2 X 3/2), (b) P(1s X< 2) (c) P(Y X) (d) P(X 2Y). (f) If Z VX, find the CDF of Z. (d) P(X+Y 3/4)
-0.2r 2.5x using the bisection method (1 point) In this problem you will approximate a solution of e Instead of solving e22.5x, you can let f(z) 027 - 2.5z and solve f(z) 0 First find a rough guess for where a solution might be Evaluate f(x) at -4,-3,-2,-1,0, 1,2,3, and 4. Remember that you can make Webwork do your calculations for you! f(-4) f(-3) f(-2) f(0)- f(1) = f(2) - f(3) - f(4) Using your answers above, the Intermediate Value...