Complete the scalar multiplication rules

Exercise and reference answers

Missing parts

1. Answer

   every entry

   Choices

   1. every entry
   2. the diagonal only
   3. the first row

2. Answer

   −1

   Choices

   1. −1
   2. 0
   3. 1

3. Answer

   −1

   Choices

   1. −1
   2. 1
   3. 2

Complete the statement

kA multiplies {0} by k. In particular −A is the same as {1} times A, and A − B means A plus {2} times B.

Explanation