Terry lee question.... (1 Viewer)

[its_bui]

Thanks y'all for answering my questions, seems alot more reasonable with the correction. lol

Btw my thanks does not go out to joel or Anthony, they helped me in no effective way

 

[Trev]

care to type out the question? coz i dont hav the textbook!

 

[pals_2005]

i wil give u then answer in 6 hours time til i get home

 

[FinalFantasy]

i am interested to c what's in dat book, ppl say it's good, but last time i went to dymocks i couldn't find it #_#

 

[Supra]

its not going to b in dymocks u hve to buy it off him personally for round 50 bux...its an awesome book

 

[FinalFantasy]

its not going to b in dymocks u hve to buy it off him personally for round 50 bux...its an awesome book

where can i find him?

 

[Supra]

there was a link on buchanans site to his site...u can email him terrylee at altavista.net
umm ill PM u his direct contact numbers (this is all from teh inside cover of the textbook btw)

 

[its_bui]

ok so sorry i havent replied in a while been real busy at school with finding non-zero vectors in the kernel of T questions omg there so hard but anyways heres the question:

Define the modulus | z | of a complex number z. Given two numbers z1 and z2, prove:

i ) the triangle represented by the comple number 0,1,z1 is similar to the triangle represented by 0,z1, z2
ii ) | z1 - z2 |^2 + | z1+ z2 |^2 = 2| z1 |^2 + 2| z2 |^2 and interpret thsi as a theorem on a triangle giving the triangle giving hte lenght of a median in terms of the lenghts of the sides.


Finally just commenting on the previous replies, yes they actually do sell the terry lee book in dymocks, try the city theres plenty. But talking to him recently, he said that his releasing another "new edition" real soon so you should wait.

 

[FinalFantasy]

ii ) | z1 - z2 |^2 + | z1+ z2 |^2 = 2| z1 |^2 + 2| z2 |^2 and interpret thsi as a theorem on a triangle giving the triangle giving hte lenght of a median in terms of the lenghts of the sides.

| z1 - z2 |^2 + | z1+ z2 |^2=(z1-z2)(z1(bar)-z2(bar))+(z1+z2)(z1(bar)+z2(bar))
=2z1z1(bar)+2z2z2(bar)=2|z1|²+2|z2|²

 

[FinalFantasy]

don't get ur "i ) the triangle represented by the comple number 0,1,z1 is similar to the triangle represented by 0,z1, z2" unless u mean 0,1,z1 and 0,z1, z1^2
hmm..

 

[its_bui]

no i dont mean "z1
^2"

yea its a challenging question....

 

[FinalFantasy]

hmm.. I'm interested to see the solution then

 

[its_bui]

haha i posted on bos to get answers not to figure it out myself lol
btw final fantasy is a hectic game

 

[FinalFantasy]

Final Fantasy is the best game made ever!

 

[Slidey]

no i dont mean "z1
^2"

yea its a challenging question....

Yes, it is very challenging to prove something which is not correct.

Think about it: the two triangles have the points 0,z1,1 and 0,z1,z2.

Try drawing it and letting z1 be, say, 1+i and z2 be -500+i. Can you honestly tell me those two triangles are similar?

Did you type the question out correctly?

 

[FinalFantasy]

slide rule is right! u have 0,1 and z1, u can't show da 2 are similar w\ an arbitrary z2 unless z2 is something special

 

[its_bui]

look bro i typed it out correctly, its a question in terry lee so i derno mite b a mistake? he sed he made quiet a few mistakes in his book

 

[Slidey]

^ Do you know why he removed his 4 unit stuff? Maybe we could ask him to put it back?

 

[Ogden_Nash]

My version of Terry Lee says prove 0, 1, z1 is similar to 0, z2, z1z2. That seems much more reasonable.

 

[nit]

yep, thats the corrected version of the question, without a doubt