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Started on Wednesday, 26 October 2022, 12:51 PM
State Finished
Completed on Wednesday, 26 October 2022, 1:25 PM
Time taken 33 mins 53 secs
Marks 5.00/5.00
Grade 10.00 out of 10.00 (100%)
Question 1
Correct
Mark 1.00 out of 1.00
Use DeMoivre’s theorem to find 161/4. Express your answer in complex form.
Select one:
a. 2, – 2
b. 2 cis (π/2), 2 cis (3π/2)
c. 2, 2 cis (π/2), – 2, 2 cis (3π/2)
d. 2, 2 cis (2), – 2, – 2 cis (2)
e. None of these
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
What is the amplitude of y = 4 sin (2x – π/4)?
Select one:
a. 0
b. 2
c. π
d. 4
e. π/4
Your answer is correct.
1 of 3
26-Oct-22, 1:27 PM
Started on Wednesday, 26 October 2022, 12:51 PM
State Finished
Completed on Wednesday, 26 October 2022, 1:25 PM
Time taken 33 mins 53 secs
Marks 5.00/5.00
Grade 10.00 out of 10.00 (100%)
Question 1
Correct
Mark 1.00 out of 1.00
Use DeMoivre’s theorem to find 161/4. Express your answer in complex form.
Select one:
a. 2, – 2
b. 2 cis (π/2), 2 cis (3π/2)
c. 2, 2 cis (π/2), – 2, 2 cis (3π/2)
d. 2, 2 cis (2), – 2, – 2 cis (2)
e. None of these
Your answer is correct.
Question 2
Correct
Mark 1.00 out of 1.00
What is the amplitude of y = 4 sin (2x – π/4)?
Select one:
a. 0
b. 2
c. π
d. 4
e. π/4
Your answer is correct.
1 of 3
26-Oct-22, 1:27 PM
