Tab Content
More Activity

### 684 Visitor Messages

1. ohhhh, ok now this all makes more sense. I was just going off of trying to solve it before which didn't lead to much . Do you know all of these formulas and how to use them just by memory? Also I do recall theta after looking at one, we just always used it to refer to an angle whose value is unknown before.
2. I'm baffled at how you converted z to r*e^(i*t) , also is r another variable? And where did e come from ;-;.
3. Also meant to write that one root out as (-1-i)(-1)^1/3, and (1+i)(-1)^2/3, I think those are equal to each other lul. I also never learned about theta yet :S
4. oh I wrote it wrong here, the original equation was

z^3 + 2 - 2i =0 not z^3 + 2 +2i :S (sorry I wrote that really late last night and copied it down again today when I retried it).

The method I used was to convert it to a cube so it would be easier to take the cube root.
5. Can't it also be done as

z^3+2+2i=0

z^3=-2+2i

z=(-2+2i)^1/3

-2+2i = 1+3i-3-i = i^3+3i^2+3i+1

which can be simplified to three roots (1+i)^3, ((1+i)(-1)^1/3)^3, and ((1+i)(-1)^2/3)^3. They all should equal to -2+2i

then repluging it in gets z = ((1+i)^1/3)^3
which is z=1+i

Is there anything wrong with this ;-;
6. Hahaha
7. I am so tired, I just spent the past 5 hours helping my friend whose in college with Calculus. Currently 4am here . I didn't even understand half of it at first but I managed to learn as I was trying to explain it. I'm interested to see how you'd solve this problem though, Find all possible roots for z^3+2+2i=0. I'll reply in the morning as i've been up for around 24 hours now xD
8. Hmm... now I'm thinking about it.
9. How is the uniform norm calculated?
10. How do you compare sequences in L infinity? Having a bounded sequence there implies that L infinity is totally ordered, which means there has to be a way to do that...
Showing Visitor Messages 21 to 30 of 684
Page 3 of 69 First 1234561353 ... Last
Page 3 of 69 First 1234561353 ... Last

#### Basic Information

Age
19
Biography:
You don't have permission to view Firebird's Biography.
Location:
Germany

life is too shor

#### Statistics

Total Posts
1,636
Posts Per Day
1.95
##### Visitor Messages
Total Messages
684
Most Recent Message
Yesterday 11:59 PM
##### Total Thanks
Total Thanks
389
• Thanked 1,416 Times in 633 Posts
Last Activity
Today 03:13 AM
Join Date
20th August 2011
Referrals
2

### 71 Friends

City Slicker

2. #### -Anti

Ringstaart -1.0

You shall not pass!

4. #### .JcJc.

Lift, pump, burn

IX

6. #### a7x3

Hail To The King

7. #### AlphaZ

Ultimate Member

Banned

9. #### animebubble

The Walking Innuendo

10. #### Animorphs

Ultimate Member

Showing Friends 1 to 10 of 71
Page 1 of 8 1234 ... Last

#### Experience

Points
9,257
Level
1

##### Level up completed
Level up completed
99%
Points required
0

#### Activity

Activity
18.0%

Activity last 30 days
17.0%

Activity last 7 days
13.0%

#### Points

##### All Points for user
Points for User
3,052
Points for every day since registration
1,674
Points for creating Socialgroups
140
Points for Friends
213
Points for posting Visitormessages
975
Points for Referrals
50
624
34
Points for Social Group Discussions
8
26
100
Points for using rating
2
Points for replies
201
Points for Views
253
##### All Points for posts
Points for Posts
3,539
Points for Posts
2,592
Points for Social Group Messages
50
897
Average Posts per Day
1.00
##### All Points for miscellaneous
Points for Misc
2,041
Points for article in vBulletin Blog
2,041

#### Activities

##### 4th December 2013
04:00 AM Firebird has earned 3 Points for User points
04:00 AM Firebird has earned 2 Points for Posts points

##### 3rd December 2013
05:30 PM Firebird has earned 2 Points for Posts points
09:20 AM Firebird has earned 3 Points for User points
09:20 AM Firebird has earned 3 Points for Posts points
09:20 AM Firebird has earned 17 Points for Misc points

##### 2nd December 2013
06:10 PM Firebird has earned 5 Points for Posts points
06:10 PM Firebird has earned 4 Points for User points

##### 1st December 2013
08:10 PM Firebird has earned 2 Points for Posts points
08:00 PM Firebird has earned 4 Points for Posts points
08:00 PM Firebird has earned 16 Points for Misc points
09:20 AM Firebird has earned 2 Points for Posts points
09:20 AM Firebird has earned 1 Points for User points
08:30 AM Firebird has earned 5 Points for Posts points
06:30 AM Firebird has earned 2 Points for Posts points
06:20 AM Firebird has earned 2 Points for Posts points
06:10 AM Firebird has earned 2 Points for User points
06:10 AM Firebird has earned 16 Points for Misc points
06:10 AM Firebird has earned 12 Points for Posts points

##### 30th November 2013
03:10 PM Firebird has earned 1 Points for User points

Show Activities from all Users