# A few quick maths questions! PS. Its a bit of a competition!Watch

This discussion is closed.
13 years ago
#61
(Original post by JamesF)
-0.72
ay! stop cheating!
0
Thread starter 13 years ago
#62
ok, so who was first?
0
13 years ago
#63
well me obviously... (smiley in order there... )
0
13 years ago
#64
yeh this is stupid now, if u edit posts quickly enough it doesnt say edited...
0
13 years ago
#65
I edited it before u posted . I googled the answer anyway, but it came out wrong first of all, I didnt just copy u like any old cheat
0
Thread starter 13 years ago
#66
James F, yet again then!

Points:
Spenceman_ = 1
DaveManUK = 1
SsEe = 1
JamesF = 3

Question 8

Find the argument (in degrees) of the complex number z/w* if

z= 1 + i and w = 1 + 6i
0
13 years ago
#67
(Original post by JamesF)
I edited it before u posted . I googled the answer anyway, but it came out wrong first of all, I didnt just copy u like any old cheat
yeh but u changed it.
0
13 years ago
#68
125.538
0
13 years ago
#69
-35.53767779197438260885992945825 8
0
13 years ago
#70
Lol, dam :/
0
13 years ago
#71
Well?
0
Thread starter 13 years ago
#72
SsEe this time

Points:
Spenceman_ = 1
DaveManUK = 1
SsEe = 2
JamesF = 3

Question 9

Given that 1-i is the root of the cubic x³ - 8x² + 14x -12 find the real root
0
13 years ago
#73
6.......

Edit: Sum of roots = 8. 1-i and hence 1+i are roots. Other root is 8-2 = 6.
0
Thread starter 13 years ago
#74
is it just 1 playing? or does no-one else know the answer?
0
13 years ago
#75
Hope not... this is fun
0
13 years ago
#76
(Original post by SsEe)
Hope not... this is fun
Hmm - my complex questions were more challenging, Paul
0
13 years ago
#77
I've been doing AEA. I'm complexed out for tonight. And there's nothing like some healthy competition
0
Thread starter 13 years ago
#78
Again SsEe

Points:
Spenceman_ = 1
DaveManUK = 1
SsEe = 3
JamesF = 3

Question 10

Let z = a + ib be a complex number satisfying the relation

zz* + i(z+z*) = 8 + 4i

What is the positive value of b?
0
13 years ago
#79
2.........
0
13 years ago
#80
I had to get some food
0
X
new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Cranfield University
Cranfield Forensic MSc Programme Open Day Postgraduate
Thu, 25 Apr '19
• University of the Arts London
Open day: MA Footwear and MA Fashion Artefact Postgraduate
Thu, 25 Apr '19
• Cardiff Metropolitan University
Undergraduate Open Day - Llandaff Campus Undergraduate
Sat, 27 Apr '19

### Poll

Join the discussion

#### Have you registered to vote?

Yes! (125)
39.56%
No - but I will (17)
5.38%
No - I don't want to (20)
6.33%
No - I can't vote (<18, not in UK, etc) (154)
48.73%