Week 5 0B2 Review Sessions

Week 5 0B2 Review Sessions

University

8 Qs

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Week 5 0B2 Review Sessions

Week 5 0B2 Review Sessions

Assessment

Quiz

Mathematics

University

Practice Problem

Hard

Created by

Nikesh Solanki

Used 26+ times

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8 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Which of the following sums are possible?

A+C

A+B

C+A

B+A

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Which of the following scalar products are possible?

0C

5A

5B

5C

3.

MULTIPLE SELECT QUESTION

45 sec • 2 pts

Media Image

Which of the following matrix products are possible?

AC

AB

BA

BC

None of these.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If we have two matrices A and B that can be added, is it necessarily true that A+B=B+A?

Yes

No

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If we have two matrices A and B that can be multiplied both AB and BA can be formed, is it necessarily true that AB=BA?

Yes

No

6.

MULTIPLE CHOICE QUESTION

1 min • 4 pts

Media Image

What is the (1,2)-th entry of the product AB.

0

4

1

-1

10

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

8.

MULTIPLE CHOICE QUESTION

2 mins • 4 pts

Media Image

What is (2,1)-th entry of the inverse of the matrix in the picture?

-1/9

-3/5

-2/3

-1/10

0