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Discrete Mathematics and Its Applications 6th Edition - Solutions by Chapter

Discrete Mathematics and Its Applications | 6th Edition | ISBN: 9780073229720 | Authors: Kenneth Rosen

Full solutions for Discrete Mathematics and Its Applications | 6th Edition

ISBN: 9780073229720

Discrete Mathematics and Its Applications | 6th Edition | ISBN: 9780073229720 | Authors: Kenneth Rosen

Discrete Mathematics and Its Applications | 6th Edition - Solutions by Chapter

Solutions by Chapter
4 5 0 265 Reviews
Textbook: Discrete Mathematics and Its Applications
Edition: 6
Author: Kenneth Rosen
ISBN: 9780073229720

Discrete Mathematics and Its Applications was written by Patricia and is associated to the ISBN: 9780073229720. The full step-by-step solution to problem in Discrete Mathematics and Its Applications were answered by Patricia, our top Math solution expert on 01/16/18, 07:40PM. This textbook survival guide was created for the textbook: Discrete Mathematics and Its Applications, edition: 6. Since problems from 80 chapters in Discrete Mathematics and Its Applications have been answered, more than 6849 students have viewed full step-by-step answer. This expansive textbook survival guide covers the following chapters: 80.

Key Math Terms and definitions covered in this textbook
  • Associative Law (AB)C = A(BC).

    Parentheses can be removed to leave ABC.

  • Basis for V.

    Independent vectors VI, ... , v d whose linear combinations give each vector in V as v = CIVI + ... + CdVd. V has many bases, each basis gives unique c's. A vector space has many bases!

  • Column picture of Ax = b.

    The vector b becomes a combination of the columns of A. The system is solvable only when b is in the column space C (A).

  • Commuting matrices AB = BA.

    If diagonalizable, they share n eigenvectors.

  • Complete solution x = x p + Xn to Ax = b.

    (Particular x p) + (x n in nullspace).

  • Complex conjugate

    z = a - ib for any complex number z = a + ib. Then zz = Iz12.

  • Distributive Law

    A(B + C) = AB + AC. Add then multiply, or mUltiply then add.

  • Fourier matrix F.

    Entries Fjk = e21Cijk/n give orthogonal columns FT F = nI. Then y = Fe is the (inverse) Discrete Fourier Transform Y j = L cke21Cijk/n.

  • Kronecker product (tensor product) A ® B.

    Blocks aij B, eigenvalues Ap(A)Aq(B).

  • Left nullspace N (AT).

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

  • Multiplication Ax

    = Xl (column 1) + ... + xn(column n) = combination of columns.

  • Normal equation AT Ax = ATb.

    Gives the least squares solution to Ax = b if A has full rank n (independent columns). The equation says that (columns of A)·(b - Ax) = o.

  • Nullspace matrix N.

    The columns of N are the n - r special solutions to As = O.

  • Right inverse A+.

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

  • Rotation matrix

    R = [~ CS ] rotates the plane by () and R- 1 = RT rotates back by -(). Eigenvalues are eiO and e-iO , eigenvectors are (1, ±i). c, s = cos (), sin ().

  • Row picture of Ax = b.

    Each equation gives a plane in Rn; the planes intersect at x.

  • Simplex method for linear programming.

    The minimum cost vector x * is found by moving from comer to lower cost comer along the edges of the feasible set (where the constraints Ax = b and x > 0 are satisfied). Minimum cost at a comer!

  • Solvable system Ax = b.

    The right side b is in the column space of A.

  • Transpose matrix AT.

    Entries AL = Ajj. AT is n by In, AT A is square, symmetric, positive semidefinite. The transposes of AB and A-I are BT AT and (AT)-I.

  • Triangle inequality II u + v II < II u II + II v II.

    For matrix norms II A + B II < II A II + II B II·

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