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Started on Sunday, 18 September 2022, 9:02 PM
State Finished
Completed on Sunday, 18 September 2022, 9:22 PM
Time taken 19 mins 27 secs
Marks 5.00/5.00
Grade 10.00 out of 10.00 (100%)
Question 1
Correct
Mark 1.00 out of 1.00
What are the possible rational roots of f(x) = x4 – 173x3 – 16x2 – 7x – 15, according to the rational root theorem? “±” means “plus
or minus”.
Select one:
a. {1, 3, 5, 15}
b. {±1, ±3, ±5, ±15}
c. {±1/15, ±3/15, ±1, ±3, ±5, ±15}
d. {±1, ±5, ±1/3, ±5/3, ±1/5, ±1/15}
e. None of these
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
If a = 2 + i, and b = 3 – 2i, what is a/b?
Select one:
a. 13/4 + 13i/7
b. 13/4 – 13i/7
c. 4/13 + 7i/13
d. 4/13 – 7i/13
e. None of these
Your answer is correct.
1 of 3
18-Sep-22, 9:25 PM
Started on Sunday, 18 September 2022, 9:02 PM
State Finished
Completed on Sunday, 18 September 2022, 9:22 PM
Time taken 19 mins 27 secs
Marks 5.00/5.00
Grade 10.00 out of 10.00 (100%)
Question 1
Correct
Mark 1.00 out of 1.00
What are the possible rational roots of f(x) = x4 – 173x3 – 16x2 – 7x – 15, according to the rational root theorem? “±” means “plus
or minus”.
Select one:
a. {1, 3, 5, 15}
b. {±1, ±3, ±5, ±15}
c. {±1/15, ±3/15, ±1, ±3, ±5, ±15}
d. {±1, ±5, ±1/3, ±5/3, ±1/5, ±1/15}
e. None of these
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
If a = 2 + i, and b = 3 – 2i, what is a/b?
Select one:
a. 13/4 + 13i/7
b. 13/4 – 13i/7
c. 4/13 + 7i/13
d. 4/13 – 7i/13
e. None of these
Your answer is correct.
1 of 3
18-Sep-22, 9:25 PM
