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Fundamentals of Differential Equations and Boundary Value Problems 6th Edition - Solutions by Chapter

Fundamentals of Differential Equations and Boundary Value Problems | 6th Edition | ISBN: 9780321747747 | Authors: Kent Nagle

Full solutions for Fundamentals of Differential Equations and Boundary Value Problems | 6th Edition

ISBN: 9780321747747

Fundamentals of Differential Equations and Boundary Value Problems | 6th Edition | ISBN: 9780321747747 | Authors: Kent Nagle

Fundamentals of Differential Equations and Boundary Value Problems | 6th Edition - Solutions by Chapter

Solutions by Chapter
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This textbook survival guide was created for the textbook: Fundamentals of Differential Equations and Boundary Value Problems, edition: 6. Since problems from 10 chapters in Fundamentals of Differential Equations and Boundary Value Problems have been answered, more than 882 students have viewed full step-by-step answer. The full step-by-step solution to problem in Fundamentals of Differential Equations and Boundary Value Problems were answered by Sieva Kozinsky, our top Math solution expert on 11/14/17, 08:38PM. Fundamentals of Differential Equations and Boundary Value Problems was written by Sieva Kozinsky and is associated to the ISBN: 9780321747747. This expansive textbook survival guide covers the following chapters: 10.

Key Math Terms and definitions covered in this textbook
  • Column space C (A) =

    space of all combinations of the columns of A.

  • Diagonalizable matrix A.

    Must have n independent eigenvectors (in the columns of S; automatic with n different eigenvalues). Then S-I AS = A = eigenvalue matrix.

  • Echelon matrix U.

    The first nonzero entry (the pivot) in each row comes in a later column than the pivot in the previous row. All zero rows come last.

  • Elimination matrix = Elementary matrix Eij.

    The identity matrix with an extra -eij in the i, j entry (i #- j). Then Eij A subtracts eij times row j of A from row i.

  • Fibonacci numbers

    0,1,1,2,3,5, ... satisfy Fn = Fn-l + Fn- 2 = (A7 -A~)I()q -A2). Growth rate Al = (1 + .J5) 12 is the largest eigenvalue of the Fibonacci matrix [ } A].

  • Hypercube matrix pl.

    Row n + 1 counts corners, edges, faces, ... of a cube in Rn.

  • Indefinite matrix.

    A symmetric matrix with eigenvalues of both signs (+ and - ).

  • Left nullspace N (AT).

    Nullspace of AT = "left nullspace" of A because y T A = OT.

  • Multiplicities AM and G M.

    The algebraic multiplicity A M of A is the number of times A appears as a root of det(A - AI) = O. The geometric multiplicity GM is the number of independent eigenvectors for A (= dimension of the eigenspace).

  • Normal matrix.

    If N NT = NT N, then N has orthonormal (complex) eigenvectors.

  • Partial pivoting.

    In each column, choose the largest available pivot to control roundoff; all multipliers have leij I < 1. See condition number.

  • Polar decomposition A = Q H.

    Orthogonal Q times positive (semi)definite H.

  • Pseudoinverse A+ (Moore-Penrose inverse).

    The n by m matrix that "inverts" A from column space back to row space, with N(A+) = N(AT). A+ A and AA+ are the projection matrices onto the row space and column space. Rank(A +) = rank(A).

  • Rank one matrix A = uvT f=. O.

    Column and row spaces = lines cu and cv.

  • Right inverse A+.

    If A has full row rank m, then A+ = AT(AAT)-l has AA+ = 1m.

  • Standard basis for Rn.

    Columns of n by n identity matrix (written i ,j ,k in R3).

  • Subspace S of V.

    Any vector space inside V, including V and Z = {zero vector only}.

  • Tridiagonal matrix T: tij = 0 if Ii - j I > 1.

    T- 1 has rank 1 above and below diagonal.

  • Vector space V.

    Set of vectors such that all combinations cv + d w remain within V. Eight required rules are given in Section 3.1 for scalars c, d and vectors v, w.

  • Vector v in Rn.

    Sequence of n real numbers v = (VI, ... , Vn) = point in Rn.

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