1. Why is it necessary to account for the order of a matrix when adding or subtracting matrices?
2. Explain the conditions necessary to multiply two matrices, each of a different order. What does the scalar multiplication of a Matrix means? Give an example.
3. Under what condition(s) the multiplication of two different size matrices is possible? If the product of two matrices A*B is possible is B*A also always possible? If not, then under what condition(s) they are both possible?
4. Provide an example