![Let p e Q[X] of degre d. Consider the field extension Q(7) Shall show this is an algebraic extension of degree d. Clearly 7 s](http://img.homeworklib.com/questions/431cd940-5f2c-11eb-99de-7da35076f3c2.png?x-oss-process=image/resize,w_560)

2u-5 8. Let w be a root of f(x) = r +2r - 6 over the field Q. Consider z E Q(w). Find a, b, c, d e Q us + w-2 such that : a + bu + cu2 + du 9. Let E be an extension field of a field F. (1) What does it mean for an element z E E being algebraic over F? (2) What does it mean for an element z EF being transcendental...
3. Let T (V), and B be an orthonormal basis, so that M(T,B) (5+20 pts) Is T self-adjoint? Why/Why Not? (5+20 pts) Is T normal? Why/Why Not? . (10 pts/box with explanation) Now, let R E L(V) be a self-adjoint operator, SEL(V) a normal operator, and U E L(V) an operator that is neither self-adjoint nor normal; what properties do these operators have-mark R (if true only for F = R) / C (if true only for F = C)...
9. Let E be an extension field of a field F. (1) What does it mean for an element z EE being algebraic over F? (2) What does it mean for an element z E E being transcendental over F? (3) Can you find any element r e C such that r is transcendental over Q? (4) Can you prove that if a E E is algebraic over F then (F(a): F] is finite? (5) Can you prove that if...
13. Let f(a) = r lnx for > 0. Let Q. be the point of inflection of S. Let Q3 = (Q2) be the minimum of f(x) for r > 0. Let Q = ln(3 + IQ1| + 2 Q2 + 3|Q31). Then T = 5 sinº(1000) satisfies:- (A) O ST < 1. - (B) 1 ST <2.-(C) 2 ST <3. - (D) 3 <T<4. - (E) 4 ST55.
Part D,E,F,G
10. Let p(x) +1. Let E be the splitting field for p(x) over Q. a. Find the resolvent cubic R(z). b. Prove that R(x) is irreducible over Q. c. Prove that (E:Q) 12 or 24. d. Prove: Gal(E/Q) A4 or S4 e. If p(x) (2+ az+ b)(a2 + cr + d), verify the calculations on page 100 which show that a2 is a root of the cubic polynomial r(x)3-4. 1. f. Prove: r(x) -4z 1 is irreducible in...
f(t) -S -8 -7 -3 --1 3 5 1 2 13 4 7 8 9 12 t(ms 15 16 4. For the above periodic signal f(t), specify the symmetry (if any) and determine all coefficients as well as the value for w, so as to find the Fourier series representation of f(t) in the following forms. (24 pts) GO A. f(t) = a + ancos(not) + b sin(nw.t): B. f(t) = R-Cneinwor. n=1 Type A
2. Let S 11,2,3,4,5, 6, 7,8,91 and let T 12,4,6,8. Let R be the relation on P (S) detined by for all X, Y E P (s), (X, Y) E R if and only if IX-T] = IY-T]. (a) Prove that R is an equivalence relation. (b) How many equivalence classes are there? Explain. (c) How mauy elements of [ø], the equivalence class of ø, are there? Explain (d) How many elements of [f1,2,3, 4)], the equivalence class of (1,2,3,...
6. (20) Let G = (V, ∑, R, S) be a grammar with V = {Q, R, T};
∑ = {q, r,ts}; and the set of rules:
S→Q
Q→q | RqT
R→r | rT | QQr
T→t | S| tT
a. (5) Convert G to a PDA using the method we described.
b. (15) Convert G to Chomsky normal form.
6. (20) Let G = (V, , R, S) be a grammar with V = {Q, R, T}; { =...
Let f(t) = 2t + 4. f-1(s) Let g(x) 2 + 1 g-(3) Below is an input-output table for the function h(x). х h(x) 2 0 1 1 2 الها 3 1 4 0 h-(3) = Now consider the following graph: 5 3 2 -5 -4 -3 -2 -/ 2 Cat 3 4. -2 3 -4 -5+ q
1. [2] Is the function f :Q\ {0} →Q defined by f(x) = 1 + 2 onto? Why or why not? 2. [3] Let A = {1, 2, 3, 4, 5,6}, and f: A+ A be the function given in the table below. 2 1 2 3 4 5 6 f(x) 3 5 6 24 1| (a) Explain why f is invertible. (b) Is it true that f-1 = f o f? Why or why not?