Help!!

lhaops

New member
Joined
Sep 30, 2019
Messages
1
I need some help with the following questions:

1) Let z and w be the complex numbers in the picture below:
Screen Shot 2019-09-30 at 7.57.58 PM.png
If |z|=4 and |w|=2 then what is the imaginary part of z/w?

2) Consider the complex numbers
$z_1, z_2, z_3$
and
$z_4$
in the following picture, with the various angles between the line segments marked:Screen Shot 2019-09-30 at 11.36.56 AM.png
Here, we have that
$|z_1| = |z_3| = 3$
and
$|z_2| = |z_4| = 2$
. Then calculate the ordered list
\[ z_1^6, z_2^6, z_3^6, z_4^6.\]
Enter in your answers in order, in rectangular form.

3) The equation
\[z^3 = -2 - 2i\]
has
$3$
solutions. What is the unique solution in the fourth quadrant? Enter in your answer in rectangular form.

4) There exist two complex numbers
$c$
, say
$c_1$
and
$c_2$
, so that
$3 + 2i$
,
$6 + i$
, and
$c$
form the vertices of an equilateral triangle. Find the product
$c_1 c_2$
in rectangular form.
Screen Shot 2019-09-30 at 8.03.43 PM.png

5) Consider the curve with equation
\[\operatorname{Re}\left( \dfrac{1}{z} \right) = \dfrac{1}{6}.\]


For each complex number in the following list,
\[1, 4i, 3+3i, 3-3i, 1 - 2i, 2+ 3i, 6,\]
figure out whether each one is on the curve, then enter "yes" or "no" in the blank corresponding to each option below.
 
You haven't said what kind of help you want from us. Please show your work, so we can see how far you can get, and where you are stuck. That also gives us an idea of the appropriate level of response.

Also, please don't ask several unrelated questions at once, which can be irritating. I wouldn't answer them all at once anyway.

You did read the site posting guidelines, right? Be sure to read the first and fifth especially, and act accordingly. It makes things go a lot better.
 
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