Week 4 Review Session 0B2

What is the (i,j)-th entry of a matrix A?

• An element of A.

• The number in the i-th row and j-th column of A.

• The number in the j-th row and i-th column of A.

• None of these.

Which of the following are NOT row operations.

Let s denote the number of shirts Nikesh owns, and t the number of ties. Suppose he owns twice as many ties as shirts. Which of the following summarises this accurately?

• t=2s

• s=2t

• t-2s=0

• s-2t=0

• Yes

• No

Vectors can be considered as matrices

• True

• False

Rate the movie The Matrix Ressurctions.

• Excellent

• Good

• Average

• Poor

• Trash

How helpful do you find these Quizizz activities for identifying what you understand and what you misunderstand?

• Very helpful

• Quite Helpful.

• Moderately helpful.

• A little helpful.

• Not at all.

How enjoyable do you find the Quizizz activities.

• Very enjoyable.

• Quite enjoyable.

• Its okay.

• Somewhat unenjoyable.

• Very unenjoyable.