Contemporary Mathematics for Business & Consumers
8th Edition
ISBN: 9781305886803
Author: Brechner
Publisher: Cengage
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Chapter 5, Problem 2CR
A mathematical statement expressing a relationship of equality is known as a(n)________. (5-1)
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R denotes the field of real numbers, Q denotes the field of rationals, and
Fp denotes the field of p elements given by integers modulo p. You may refer to general
results from lectures.
Question 1
For each non-negative integer m, let R[x]m denote the
vector space consisting of the polynomials in x with coefficients in R and of degree ≤ m.
x²+2, V3 = 5. Prove that (V1, V2, V3) is a linearly independent
(a) Let vi = x, V2 =
list in R[x] 3.
(b) Let V1, V2, V3 be as defined in (a). Find a vector v € R[×]3 such that (V1, V2, V3, V4)
is a basis of R[x] 3.
[8]
[6]
(c) Prove that the map ƒ from R[x] 2 to R[x]3 given by f(p(x)) = xp(x) — xp(0) is a
linear map.
[6]
(d) Write down the matrix for the map ƒ defined in (c) with respect to the basis
(2,2x + 1, x²) of R[x] 2 and the basis (1, x, x², x³) of R[x] 3.
[5]
Question 4
(a) The following matrices represent linear maps on R² with respect to an
orthonormal basis:
=
[1/√5 2/√5
[2/√5 -1/√5]
"
[1/√5 2/√5]
A =
B =
[2/√5 1/√5] 1
C =
D =
=
=
[ 1/3/5 2/35]
1/√5 2/√5
-2/√5 1/√5'
For each of the matrices A, B, C, D, state whether it represents a self-adjoint
linear map, an orthogonal linear map, both, or neither.
(b) For the quadratic form
q(x, y, z) = y² + 2xy +2yz
over R, write down a linear change of variables to u, v, w such that q in these
terms is in canonical form for Sylvester's Law of Inertia.
[6]
[4]
part b please
Chapter 5 Solutions
Contemporary Mathematics for Business & Consumers
Ch. 5.I - Solve the following equations for the unknown and...Ch. 5.I - Prob. 2TIECh. 5.I - Prob. 3TIECh. 5.I - Prob. 4TIECh. 5.I - Solve the following equations for the unknown and...Ch. 5.I - Prob. 6TIECh. 5.I - Prob. 7TIECh. 5.I - Prob. 8TIECh. 5.I - Prob. 9TIECh. 5.I - For the following statements, underline the key...
Ch. 5.I - Prob. 1RECh. 5.I - Prob. 2RECh. 5.I - Prob. 3RECh. 5.I - Prob. 4RECh. 5.I - Prob. 5RECh. 5.I - Prob. 6RECh. 5.I - Prob. 7RECh. 5.I - Prob. 8RECh. 5.I - Prob. 9RECh. 5.I - Prob. 10RECh. 5.I - Prob. 11RECh. 5.I - Prob. 12RECh. 5.I - Prob. 13RECh. 5.I - Prob. 14RECh. 5.I - Prob. 15RECh. 5.I - Prob. 16RECh. 5.I - Prob. 17RECh. 5.I - For the following statements, underline the key...Ch. 5.I - Prob. 19RECh. 5.I - Prob. 20RECh. 5.I - Prob. 21RECh. 5.I - Prob. 22RECh. 5.I - Prob. 23RECh. 5.I - Prob. 24RECh. 5.I - For the following statements, underline the key...Ch. 5.I - Prob. 26RECh. 5.I - Prob. 27RECh. 5.I - Prob. 28RECh. 5.I - Prob. 29RECh. 5.I - Prob. 30RECh. 5.I - For the following statements, underline the key...Ch. 5.I - Grouping symbols are used to arrange numbers,...Ch. 5.II - Don and Chuck are salespeople for Security One...Ch. 5.II - One-third of the checking accounts at the...Ch. 5.II - Prob. 13TIECh. 5.II - Prob. 14TIECh. 5.II - Last week Comfy Cozy Furniture sold 520 items. It...Ch. 5.II - REI (Recreational Equipment Incorporated) sells a...Ch. 5.II - Prob. 17TIECh. 5.II - Prob. 1RECh. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Prob. 4RECh. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Prob. 16RECh. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Set up and solve equations for the following...Ch. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Prob. 22RECh. 5.II - Prob. 23RECh. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Prob. 25RECh. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - Use ratio and proportion to solve the following...Ch. 5.II - 30. In a move to provide additional sales for U.S....Ch. 5 - A(n) ______ is a mathematical statement describing...Ch. 5 - A mathematical statement expressing a relationship...Ch. 5 - Prob. 3CRCh. 5 - Prob. 4CRCh. 5 - The numerical value of the unknown that makes an...Ch. 5 - Prob. 6CRCh. 5 - 7. To transpose means to bring a term from one...Ch. 5 - Prob. 8CRCh. 5 - 9. To prove the solution of an equation, we...Ch. 5 - Prob. 10CRCh. 5 - Prob. 11CRCh. 5 - 12. A comparison of two quantities by division is...Ch. 5 - Prob. 13CRCh. 5 - Prob. 14CRCh. 5 - Prob. 1ATCh. 5 - Prob. 2ATCh. 5 - Solve the following equations for the unknown and...Ch. 5 - Prob. 4ATCh. 5 - Prob. 5ATCh. 5 - Prob. 6ATCh. 5 - Prob. 7ATCh. 5 - Prob. 8ATCh. 5 - Prob. 9ATCh. 5 - Prob. 10ATCh. 5 - For the following statements, underline the key...Ch. 5 - Prob. 12ATCh. 5 - Prob. 13ATCh. 5 - Prob. 14ATCh. 5 - Prob. 15ATCh. 5 - For the following statements, underline the key...Ch. 5 - Prob. 17ATCh. 5 - Prob. 18ATCh. 5 - Set up and solve equations for each of the...Ch. 5 - Set up and solve equations for each of the...Ch. 5 - Prob. 21ATCh. 5 - Set up and solve equations for each of the...Ch. 5 - Prob. 23ATCh. 5 - Set up and solve equations for the following...Ch. 5 - Set up and solve equations for the following...Ch. 5 - Set up and solve equations for the following...Ch. 5 - Set up and solve equations for the following...Ch. 5 - Set up and solve equations for the following...Ch. 5 - Set up and solve equations for the following...Ch. 5 - Prob. 30ATCh. 5 - Use ratio and proportion to solve the following...Ch. 5 - Use ratio and proportion to solve the following...Ch. 5 - Use ratio and proportion to solve the following...Ch. 5 - 34. One special type of ratio is known as a rate....
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- Question 5 (a) Let a, b, c, d, e, ƒ Є K where K is a field. Suppose that the determinant of the matrix a cl |df equals 3 and the determinant of determinant of the matrix a+3b cl d+3e f ГЪ e [ c ] equals 2. Compute the [5] (b) Calculate the adjugate Adj (A) of the 2 × 2 matrix [1 2 A = over R. (c) Working over the field F3 with 3 elements, use row and column operations to put the matrix [6] 0123] A = 3210 into canonical form for equivalence and write down the canonical form. What is the rank of A as a matrix over F3? 4arrow_forwardQuestion 2 In this question, V = Q4 and - U = {(x, y, z, w) EV | x+y2w+ z = 0}, W = {(x, y, z, w) € V | x − 2y + w − z = 0}, Z = {(x, y, z, w) € V | xyzw = 0}. (a) Determine which of U, W, Z are subspaces of V. Justify your answers. (b) Show that UW is a subspace of V and determine its dimension. (c) Is VU+W? Is V = UW? Justify your answers. [10] [7] '00'arrow_forwardGood explanation it sure experts solve itarrow_forward
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