Graded Quiz Unit 3 - Attempt Review [PDF]

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Dashboard / My courses / MATH 1201 - AY2022-T1 / 16 September - 22 September / Graded Quiz Unit 3

Started on Wednesday, 22 September 2021, 9:57 PM State Finished Completed on Wednesday, 22 September 2021, 10:30 PM Time taken 33 mins 7 secs Marks 10.00/10.00 Grade 100.00 out of 100.00

Question 1 Correct

If A = 3 and B = 4 + i, A/B = ?

Mark 1.00 out of 1.00

Select one: a.

3/4

b. 12/17 – (3/17)i c.

12/5 + (3/5)i

d. 12/17 + (3/17)i e.

None of these

Your answer is correct. The correct answer is: 12/17 – (3/17)i



Question 2 Correct

If A = 4 + 2i and B = 7 -3i, A – B = ?

Mark 1.00 out of 1.00

Select one: a.

-3 + 5i

b. -3 c.

-3 – i

d. -3 + i e.

1 + 9i

Your answer is correct. The correct answer is: -3 + 5i



Question 3 Correct

If f(x) = x8 - 1 is divided by x -2, the remainder would be?

Mark 1.00 out of 1.00

Select one: a.

-1

b. 0 c.

1

d. 255 e.

None of these

Your answer is correct. The correct answer is: 255



Question 4 Correct

What are the possible rational roots of f(x) = x4 -7x + 8?

Mark 1.00 out of 1.00

Select one: a.

{8}

b. {+-1, +-2, +-7, +-8} c.

{+-1, +-2,+-8}

d. {+-1, +-8} e.

{+-1, +-2, +-4, +-8}

Your answer is correct. The correct answer is: {+-1, +-2, +-4, +-8}



Question 5 Correct

What is i103?

Mark 1.00 out of 1.00

Select one: a.

1

b. -1 c.

i

d. -i e.

None of these

Your answer is correct. The correct answer is: -i



Question 6 Correct

The quotient of 4x3 + 10x2  − 6x − 20 by x + 2 is:

Mark 1.00 out of 1.00

Select one: a.

−4x2 − 2x +10

b. 4x2 + 2x -10

c.

−4x2 + 2x −10

d. −4x2 + 2x +10

e.

None of these

Your answer is correct. The correct answer is: 4x2 + 2x -10



Question 7 Correct

What is f(x) =  x8 - 1 divided by x - 1?

Mark 1.00 out of 1.00

Select one: a.

x2 + 1

b. x2 – 1 c.

x7 + x6 + x5 + x4 + x3 + x2 + x + 1

d. x6 + x5 + x4 + x3 + x2 + x + 1 e.

x7 + x6 + x5 + x4 + x3 + x2 + x

Your answer is correct. The correct answer is: x7 + x6 + x5 + x4 + x3 + x2 + x + 1



Question 8 Correct

The product (1 + i + i2 + i3 + i4 + i5).(1 + i + i2 + i3 + i4 – i5) is:

Mark 1.00 out of 1.00

Select one: a.

0

b. 1 c.

2

d. 3 e.

None of these

Your answer is correct. The correct answer is: 2



Question 9 Correct

If A = 3 + 2i and B = 4 – i, then AB would be?

Mark 1.00 out of 1.00

Select one: a.

14 + 5i

b. 10 + 5i c.

7+i

d. 10 – 5i e.

None of these

Your answer is correct. The correct answer is: 14 + 5i



Question 10 Correct

The remainder of x8 + 1 divided by x + 1 is:

Mark 1.00 out of 1.00

Select one: a.

1 

b. 2 c.

3

d. 4 e.

None of these

Your answer is correct. The correct answer is: 2

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