5.9 What is contained in array arr1 after each of the following sets of statements is executed? (a) arr1 = [1 2 3 4 5; 6 7 8 9 10; 11 12 13 14 15]; mask = mod (arr1, 2) == 0; arr1 (mask) = -arr1 (mask); (b) arr1 = [1 2 3 4; 5 6 7 8; 9 10 11 12]; arr2 = arr1 <= 5; arri (arr2) = 0; arrl(-arr2) = arr1 (-arr2).^2;

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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5.9 What is contained in array arrl after each of the following sets of statements
is executed?
(a) arr1 = [1 2 3 4 5 6 7 8 9 10; 11 12 13 14 15];
mask = mod (arr1, 2) == 0;
arri (mask) = -arrl (mask);
(b) arr1= [1 2 3 4; 5 6 7 8; 9 10 11 12];
arr2 = arr1 <= 5;
arr1 (arr2) = 0;
arrl(-arr2) = arrl(-arr2).^2;
Transcribed Image Text:5.9 What is contained in array arrl after each of the following sets of statements is executed? (a) arr1 = [1 2 3 4 5 6 7 8 9 10; 11 12 13 14 15]; mask = mod (arr1, 2) == 0; arri (mask) = -arrl (mask); (b) arr1= [1 2 3 4; 5 6 7 8; 9 10 11 12]; arr2 = arr1 <= 5; arr1 (arr2) = 0; arrl(-arr2) = arrl(-arr2).^2;
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