Unit Test #38

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

What is z in rectangular form?

A. 4 - 2i

B. 2 + 4i

C. 2 - 4i

D. 4 + 2i

Answer 1:

 

Q2:

 

In question 1, what is the modulus of z?

A. 26.6°

B. 0.46 rad

C. √ 20

D. √ 12

Answer 2:

 

Q3:

 

In question 1, what is the argument of z?

A. 0.5

B. 0.46

C. π / 3

D. π / 6

Answer 3:

 

Q4:

 

Write z , in question 1, in polar form.

A. √ 20 cis 0.5

B. √ 20 cis 0.46

C. √ 12 cis 0.46

D. √ 20 cis π / 3

Answer 4:

 

Q5:

 

What is the complex number -2i in polar form?

A.2 cis 

B. 2 cis 

C. -2 cis 

D. -2 cis 

Answer 5: