Explanation Given: 0.6000 x 1 + 2000 x 2 = 2003 0.3076 x 1 − 0.4010 x 2 = 1.137 Exact solution of the above system is x = ( 5 , 1 ) T ε = 0.001 Calculation: 0.6000 x 1 + 2000 x 2 = 2003 0.3076 x 1 − 0.4010 x 2 = 1.137 Exact solution of the above system is x = ( 5 , 1 ) T Suppose that the calculated value of x 2 is x ' 2 = 1 + ε Assume the change is x 1 is δ From the first equation, we have 0.6000 ( 5 + δ ) + 2000 ( 1 + ε ) = 2003 3 + 0

Linear Algebra with Applications (9th Edition) (Featured Titles for Linear Algebra (Introductory))

9th Edition

ISBN: 9780321962218

Author: Steven J. Leon

Publisher: PEARSON

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Chapter 7.3, Problem 7E

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Chapter 7 Solutions

Linear Algebra with Applications (9th Edition) (Featured Titles for Linear Algebra (Introductory))

Ch. 7.1 - Find the three-digit decimal floating-point...Ch. 7.1 - Prob. 2E Ch. 7.1 - Represent each of the following numbers as...Ch. 7.1 - Prob. 4E Ch. 7.1 - Prob. 5E Ch. 7.1 - Prob. 6E Ch. 7.1 - Prob. 7E Ch. 7.1 - Prob. 8E Ch. 7.1 - Prob. 9E Ch. 7.1 - Prob. 10E

Ch. 7.2 - Let A=(111241 31 2) Factor A into a product LU,...Ch. 7.2 - Prob. 2E Ch. 7.2 - Let A and B be nn matrices and let xn. How many...Ch. 7.2 - Let Amn,Bnr, and x, yn. Suppose that the product...Ch. 7.2 - Let Eki be the elementary matrix formed by...Ch. 7.2 - Prob. 6E Ch. 7.2 - If A is a symmetric nn matrix with triangular...Ch. 7.2 - Prob. 8E Ch. 7.2 - Let A=LU, where L is lower triangular with 1's on...Ch. 7.2 - Suppose that A1 and the LU factorization of A have...Ch. 7.2 - Prob. 11E Ch. 7.3 - Let A=(03112 2254) and b=(17 1) Reorder the rows...Ch. 7.3 - Let A be the matrix in Exercise 1. Use the...Ch. 7.3 - Prob. 3E Ch. 7.3 - Prob. 4E Ch. 7.3 - Prob. 5E Ch. 7.3 - Prob. 6E Ch. 7.3 - Prob. 7E Ch. 7.3 - Prob. 8E Ch. 7.3 - Solve the system in Exercise 7 using four-digit...Ch. 7.3 - Use four-digit decimal floating-point arithmetic,...Ch. 7.4 - Determine F,, and 1 for each of the following...Ch. 7.4 - Let A=(200 2) and x=( x 1 x 2 ) and set...Ch. 7.4 - Let A=(1000) Use the method of Exercise 2 to...Ch. 7.4 - Let D=(30000 50000 200004) Compute the singular...Ch. 7.4 - Prob. 5E Ch. 7.4 - If D is an nn diagonal matrix, how do the values...Ch. 7.4 - Prob. 7E Ch. 7.4 - Let M denote a matrix norm on nn,V denote a vector...Ch. 7.4 - A vector x in n can also be viewed as an n1 matrix...Ch. 7.4 - A vector y in n can also be viewed as an n1 matrix...Ch. 7.4 - Let A=wyT where wm and yn. Show that Ax2x2y2w2 for...Ch. 7.4 - Prob. 12E Ch. 7.4 - Theorem 7.4.2 status that A=max1im(j=1n| a ij|)...Ch. 7.4 - Prob. 14E Ch. 7.4 - Prob. 15E Ch. 7.4 - Prob. 16E Ch. 7.4 - Prob. 17E Ch. 7.4 - Prob. 18E Ch. 7.4 - Prob. 19E Ch. 7.4 - Prob. 20E Ch. 7.4 - Let A be an mn matrix. Show that A(1,2)A2 Ch. 7.4 - Let Amn and Bnr . Show that Ax2A(1,2)x1 for all x...Ch. 7.4 - Let A be an nn matrix and let m be a matrix norm...Ch. 7.4 - Prob. 24E Ch. 7.4 - Prob. 25E Ch. 7.4 - Prob. 26E Ch. 7.4 - Let A be an nn matrix and xn. Prove: Axn1/2A2x...Ch. 7.4 - Prob. 28E Ch. 7.4 - Prob. 29E Ch. 7.4 - Solve the given two systems and compare the...Ch. 7.4 - Prob. 31E Ch. 7.4 - Prob. 32E Ch. 7.4 - Let An=(111 1 1 n ) for each positive integer n....Ch. 7.4 - Prob. 34E Ch. 7.4 - Given A=(3211) and b=(52) If two-digit decimal...Ch. 7.4 - Prob. 36E Ch. 7.4 - Prob. 37E Ch. 7.4 - Prob. 38E Ch. 7.4 - Let A and B be nonsingular nn matrices. Show that...Ch. 7.4 - Prob. 40E Ch. 7.4 - Prob. 41E Ch. 7.4 - Let A be an nn matrix and let Q and V be nn...Ch. 7.4 - Prob. 43E Ch. 7.4 - Prob. 44E Ch. 7.4 - Let A be an mn matrix with singular value...Ch. 7.4 - Let A be a nonsingular nn matrix and let Q be an...Ch. 7.4 - Let A be a symmetric nonsingular nn matrix with...Ch. 7.5 - For each of the following vectors x, find a...Ch. 7.5 - Given x3, define rij=(xi2+xj2)1/2i,j=1,2,3 For...Ch. 7.5 - For each of the given vectors x, find a...Ch. 7.5 - For each of the following, find a Householder...Ch. 7.5 - Prob. 5E Ch. 7.5 - Let A=( 1 3 2 1 2 288 2 71) and b=( 11 2 01) Use...Ch. 7.5 - Prob. 7E Ch. 7.5 - Prob. 8E Ch. 7.5 - Let Hk=I2uuT be a Householder transformation with...Ch. 7.5 - Let QT=GnkG2G1, where each Gi is a Givens...Ch. 7.5 - Prob. 11E Ch. 7.5 - Prob. 12E Ch. 7.5 - Prob. 13E Ch. 7.5 - Let R be an nn plane rotation. What is the value...Ch. 7.5 - Prob. 15E Ch. 7.5 - Prob. 16E Ch. 7.5 - Prob. 17E Ch. 7.6 - Let A=(1111) Apply one iteration of the power...Ch. 7.6 - Let A=(210131012) and u0=(111) Apply the power...Ch. 7.6 - Let A=(12 1 1) and u0=(11) Compute u1,u2,u3, and...Ch. 7.6 - Let A=A1=(1113) Compute A2 and A3, using the QR...Ch. 7.6 - Let A=(522 21 2 3 42) Verify that 1=4 is an...Ch. 7.6 - Let A be an nn matrix with distinct real...Ch. 7.6 - Prob. 7E Ch. 7.6 - Prob. 8E Ch. 7.6 - Prob. 9E Ch. 7.6 - Prob. 10E Ch. 7.6 - Prob. 11E Ch. 7.6 - Prob. 12E Ch. 7.6 - Let R be an nn upper triangular matrix whose...Ch. 7.7 - Prob. 1E Ch. 7.7 - Prob. 2E Ch. 7.7 - Let A=(10131310),b=( 4222) Use Householder...Ch. 7.7 - Prob. 4E Ch. 7.7 - Let A=(1100) where is a small scalar. Determine...Ch. 7.7 - Show that the pseudoinverse A+ satisfies the four...Ch. 7.7 - Prob. 7E Ch. 7.7 - Prob. 8E Ch. 7.7 - Show that if A is a mn matrix of rank n, then...Ch. 7.7 - Prob. 10E Ch. 7.7 - Prob. 11E Ch. 7.7 - Let A=(111100) Determine A+ and verify that A and...Ch. 7.7 - Let A=(12 1 2) and b=(6 4) Compute the singular...Ch. 7.7 - Prob. 14E Ch. 7.7 - Prob. 15E Ch. 7.7 - Prob. 16E Ch. 7 - Set A=round(10*rand(6))s=ones(6,1)b=A*s The...Ch. 7 - Prob. 2E Ch. 7 - Prob. 3E Ch. 7 - Prob. 4E Ch. 7 - Prob. 5E Ch. 7 - Prob. 6E Ch. 7 - Prob. 7E Ch. 7 - Prob. 8E Ch. 7 - Construct a matrix A as follows: A=diag(11:1:1,1);...Ch. 7 - Prob. 10E Ch. 7 - Set x1=(1:5);x2=[1,3,4,5,9];x=[x1;x2] Construct a...Ch. 7 - To plot y=sin(x), we must define vectors of x and...Ch. 7 - Let A=(452452036036) Enter the matrix A in MATLAB...Ch. 7 - Set A=round(10*rand(10,5)) and s=svd(A) Use MATLAB...Ch. 7 - Prob. 15E Ch. 7 - Prob. 16E Ch. 7 - Prob. 17E Ch. 7 - Prob. 18E Ch. 7 - Prob. 19E Ch. 7 - Prob. 1CTA Ch. 7 - Prob. 2CTA Ch. 7 - If A is a nonsingular matrix and a numerically...Ch. 7 - If A is a symmetric matrix and a numerically...Ch. 7 - Prob. 5CTA Ch. 7 - Prob. 6CTA Ch. 7 - If A is a symmetric matrix, then A1=A.Ch. 7 - Prob. 8CTA Ch. 7 - Prob. 9CTA Ch. 7 - Prob. 10CTA Ch. 7 - Prob. 1CTB Ch. 7 - Let A=(236448134)b=(304)c=(182) Use Gaussian...Ch. 7 - Prob. 3CTB Ch. 7 - Prob. 4CTB Ch. 7 - Let A be a 1010 matrix with cond(A)=5106 . Suppose...Ch. 7 - Prob. 6CTB Ch. 7 - Prob. 7CTB Ch. 7 - Prob. 8CTB Ch. 7 - Let A=(524524360360) and b=(51 19) The singular...Ch. 7 - Prob. 10CTB

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Chapter 7 Solutions