Quick picks on matrices

Exercise and reference answers

Questions

1. Question

   A matrix with one column is a:

   Choices

   1. Column matrix
   2. Row matrix
   3. Square matrix

   Correct choice

   Column matrix

2. Question

   Ones on the diagonal, zeros elsewhere is the:

   Choices

   1. Zero matrix
   2. Identity matrix
   3. Row matrix

   Correct choice

   Identity matrix

3. Question

   Swapping rows and columns gives the:

   Choices

   1. Inverse
   2. Adjoint
   3. Transpose

   Correct choice

   Transpose

4. Question

   A matrix equal to its transpose is:

   Choices

   1. Symmetric
   2. Skew symmetric
   3. Diagonal

   Correct choice

   Symmetric

5. Question

   Skew symmetric diagonal entries are all:

   Choices

   1. One
   2. Zero
   3. Negative

   Correct choice

   Zero

Instructions

Tap the correct answer before the round moves on.

Explanation