Calculus for Business Economics Life Sciences and Social Sciences Plus NEW
13th Edition
ISBN: 9780321925138
Author: Raymond Barnett
Publisher: PEARSON
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Textbook Question
Chapter A.6, Problem 64E
Rationalize the denominators in Problems 61–66.
64.
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Question 3
over a field K.
In this question, MË(K) denotes the set of n × n matrices
(a) Suppose that A Є Mn(K) is an invertible matrix. Is it always true that A is
equivalent to A-¹? Justify your answer.
(b) Let B be given by
8
B = 0 7 7
0 -7 7
Working over the field F2 with 2 elements, compute the rank of B as an element
of M2(F2).
(c) Let
1
C
-1 1
[4]
[6]
and consider C as an element of M3(Q). Determine the minimal polynomial
mc(x) and hence, or otherwise, show that C can not be diagonalised.
[7]
(d) Show that C in (c) considered as an element of M3(R) can be diagonalised. Write
down all the eigenvalues. Show your working.
[8]
16. Solve the given differential equation:
y" + 4y sin (t)u(t 2π),
-
y(0) = 1, y'(0) = 0
Given,
1
(x² + 1)(x²+4)
1/3
-1/3
=
+
x²+1 x² +4
Send your answer in
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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]
Chapter A.6 Solutions
Calculus for Business Economics Life Sciences and Social Sciences Plus NEW
Ch. A.6 - Evaluate each of the following: (A)161/2 (B)16...Ch. A.6 - Convert to radical form. (A)u1/5 (B)(6x2y5)2/9...Ch. A.6 - Prob. 3MPCh. A.6 - Prob. 4MPCh. A.6 - Write the following expression in the form axp +...Ch. A.6 - Prob. 6MPCh. A.6 - Prob. 7MPCh. A.6 - Rationalize each numerator. (A)332 (B)2n4n...Ch. A.6 - Change each expression in Problems 16 to radical...Ch. A.6 - Change each expression in Problems 16 to radical...
Ch. A.6 - Change each expression in Problems 16 to radical...Ch. A.6 - Prob. 4ECh. A.6 - Prob. 5ECh. A.6 - Change each expression in Problems 16 to radical...Ch. A.6 - Prob. 7ECh. A.6 - Prob. 8ECh. A.6 - Prob. 9ECh. A.6 - Prob. 10ECh. A.6 - Prob. 11ECh. A.6 - Prob. 12ECh. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - Prob. 22ECh. A.6 - In Problems 1324, find rational number...Ch. A.6 - In Problems 1324, find rational number...Ch. A.6 - Prob. 25ECh. A.6 - Prob. 26ECh. A.6 - Prob. 27ECh. A.6 - Prob. 28ECh. A.6 - Prob. 29ECh. A.6 - Prob. 30ECh. A.6 - Prob. 31ECh. A.6 - Prob. 32ECh. A.6 - Prob. 33ECh. A.6 - Prob. 34ECh. A.6 - Simplify each expression in Problems 3540 using...Ch. A.6 - Simplify each expression in Problems 3540 using...Ch. A.6 - Simplify each expression in Problems 3540 using...Ch. A.6 - Prob. 38ECh. A.6 - Simplify each expression in Problems 3540 using...Ch. A.6 - Simplify each expression in Problems 3540 using...Ch. A.6 - In Problems 4148, multiply, and express answers...Ch. A.6 - Prob. 42ECh. A.6 - In Problems 4148, multiply, and express answers...Ch. A.6 - In Problems 4148, multiply, and express answers...Ch. A.6 - Prob. 45ECh. A.6 - In Problems 4148, multiply, and express answers...Ch. A.6 - Prob. 47ECh. A.6 - In Problems 4148, multiply, and express answers...Ch. A.6 - Write each expression in Problems 4954 in the form...Ch. A.6 - Write each expression in Problems 4954 in the form...Ch. A.6 - Prob. 51ECh. A.6 - Write each expression in Problems 4954 in the form...Ch. A.6 - Write each expression in Problems 4954 in the form...Ch. A.6 - Write each expression in Problems 4954 in the form...Ch. A.6 - Rationalize the denominators in Problems 5560. 55....Ch. A.6 - Rationalize the denominators in Problems 5560. 56....Ch. A.6 - Prob. 57ECh. A.6 - Prob. 58ECh. A.6 - Rationalize the denominators in Problems 5560....Ch. A.6 - Rationalize the denominators in Problems 5560....Ch. A.6 - Rationalize the denominators in Problems 6166....Ch. A.6 - Rationalize the denominators in Problems 6166....Ch. A.6 - Rationalize the denominators in Problems 6166....Ch. A.6 - Rationalize the denominators in Problems 6166....Ch. A.6 - Prob. 65ECh. A.6 - Prob. 66ECh. A.6 - Prob. 67ECh. A.6 - Problems 6770 illustrate common errors involving...Ch. A.6 - Problems 6770 illustrate common errors involving...Ch. A.6 - Problems 6770 illustrate common errors involving...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - Prob. 73ECh. A.6 - Prob. 74ECh. A.6 - Prob. 75ECh. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - Prob. 77ECh. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 7182, discuss the validity of each...Ch. A.6 - In Problems 8388, simplify by writing each...Ch. A.6 - Prob. 84ECh. A.6 - In Problems 8388, simplify by writing each...Ch. A.6 - Prob. 86ECh. A.6 - In Problems 8388, simplify by writing each...Ch. A.6 - In Problems 8388, simplify by writing each...Ch. A.6 - In Problems 8994, evaluate using a calculator....Ch. A.6 - In Problems 8994, evaluate using a calculator....Ch. A.6 - Prob. 91ECh. A.6 - In Problems 8994, evaluate using a calculator....Ch. A.6 - In Problems 8994, evaluate using a calculator....Ch. A.6 - In Problems 8994, evaluate using a calculator....Ch. A.6 - In Problems 95 and 96, evaluate each expression on...Ch. A.6 - In Problems 95 and 96, evaluate each expression on...
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