Question

1. Create a 3×4 array named m that contains the integers from 1 to 12 inclusive.

2. Use array indexing to change the sign of the last element in each row.
3. Use the copy method to make a new copy m2 of the current array.
4. Change the sign of the last elements back to positive.
5. Demonstrate that the copied array m2 and m are now different.

Answer 1

This problem requires creating an array, manipulating its elements, copying it, and altering the original to demonstrate that they are independent of each other, all of which are fundamental concepts in programming within the field of computers and technology.

Step-by-step explanation:

The question involves creating and manipulating arrays, which is a concept in computer programming and can be particularly relevant in subjects such as computers and technology. To answer the question, one would:

1. Create a 3×4 array named m containing integers from 1 to 12.
2. Change the sign of the last element in each row using array indexing.
3. Use the copy method to create a new array m2 that is a copy of m.
4. Change the sign of the last elements in m back to positive.
5. Show that m2 and m are now different as a result of the changes.

These steps demonstrate array manipulation, sign changes using multiplication rules, and the concept that copying an array creates a separate instance that does not change when the original array is modified.