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Text version of the page
| More About Matrices and Arrays | ||||||||||||||||||||||||||||||||||||||||||||||
| k = find(isprime(A))' picks out the locations, using one-dimensional indexing, of the primes in the magic square: k= 2 5 9 10 11 13 Display those primes, as a row vector in the order determined by k,with A(k) ans = 5 3 2 11 7 13 When you use k as a left-hand-side index in an assignment statement, the matrix structure is preserved: A(k) = NaN A= | ||||||||||||||||||||||||||||||||||||||||||||||
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| 2-29 | ||||||||||||||||||||||||||||||||||||||||||||||