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

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DaveManUK
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#61
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#61
(Original post by JamesF)
-0.72
ay! stop cheating!
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Rustyk1
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#62
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#62
ok, so who was first?
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SsEe
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#63
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#63
well me obviously... :p: (smiley in order there... )
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DaveManUK
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#64
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#64
yeh this is stupid now, if u edit posts quickly enough it doesnt say edited...
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JamesF
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#65
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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
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Rustyk1
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#66
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#66
James F, yet again then!

Points:
Spenceman_ = 1
darth_vader05 = 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
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DaveManUK
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#67
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(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.
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SsEe
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#68
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#68
125.538
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JamesF
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#69
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#69
-35.53767779197438260885992945825 8
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JamesF
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#70
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#70
Lol, dam :/
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SsEe
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#71
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#71
Well?
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Rustyk1
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#72
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#72
SsEe this time

Points:
Spenceman_ = 1
darth_vader05 = 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
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SsEe
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#73
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#73
6.......

Edit: Sum of roots = 8. 1-i and hence 1+i are roots. Other root is 8-2 = 6.
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Rustyk1
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#74
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#74
is it just 1 playing? or does no-one else know the answer?
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SsEe
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#75
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Hope not... this is fun
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RichE
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#76
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(Original post by SsEe)
Hope not... this is fun
Hmm - my complex questions were more challenging, Paul :rolleyes: :p:
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SsEe
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#77
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#77
I've been doing AEA. I'm complexed out for tonight. And there's nothing like some healthy competition
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Rustyk1
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#78
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#78
Again SsEe

Points:
Spenceman_ = 1
darth_vader05 = 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?
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SsEe
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#79
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#79
2.........
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JamesF
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#80
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#80
I had to get some food
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