Mathematics, 24.06.2019 12:40 liik99
Let m be an n × n matrix with each entry equal to either 0 or 1. let mij denote the entry in row i and column j. a diagonal entry is one of the form mii for some i. swapping rows i and j of the matrix m denotes the following action: we swap the values mik and mjk for k = 1, 2, . . , n. swapping two columns is defined analogously. we say that m is rearrangeable if it is possible to swap some of the pairs of rows and some of the pairs of columns (in any sequence) so that, after all the swapping, all the diagonal entries of m are equal to 1. (a) give an example of a matrix m that is not rearrangeable, but for which at least one entry in each row and each column is equal to 1. (b) give a polynomial-time algorithm that determines whether a matrix m with 0-1 entries is rearrangeable.
Answers: 2
Mathematics, 21.06.2019 16:30
Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?
Answers: 1
Mathematics, 21.06.2019 19:00
1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)
Answers: 1
Mathematics, 21.06.2019 21:30
Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter
Answers: 1
Let m be an n × n matrix with each entry equal to either 0 or 1. let mij denote the entry in row i a...
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