| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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* c6 w; k, ]# R. @6 o2 O) H(x - a) = x - a8 d, O% r  s) ^, N2 w5 s# ^
(x - a) (x - b) = x^2 – ax – bx + ab
1 ~6 b/ x- u" I9 P  c. [: O7 b(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) n; T0 D) I( j# u' c(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" ?4 X3 t+ ?8 S
如此種推，% S1 q% ~$ z6 l& n' `# y$ d+ l- b
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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# u8 Y/ E7 u' Q3 h% ~9 Q[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題
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Originally posted by Triangel at 2007-4-18 01:26 PM:
3 p* X# N7 u( ]4 t# h/ Q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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4 `* Q  j1 I3 b( h[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:
3 }3 h- t! \% ^咁難既=.="/ E3 |0 B$ x" K/ c/ C

- I1 ^' c; j9 z4 \[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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. B) N/ M7 v% LThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
2 s2 A% e) ~1 H5 ?4 ~第一個答中有獎
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
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' l' F7 I* K8 c/ B: I(x-x)= 0 ，所以答案係0，is it?

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8 a! z# J6 i  }2 T9 f( k8 z! Z唔似a.math題
5 d  V1 s1 ]* |7 a6 _+ M1 B& R似IQ題=.=" G$ I( Q% J9 j# S( Z. n+ Q

% h1 E/ _% H% Y2 J- S[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:8 F4 F6 c. ?: l5 D6 B  E3 n% F: d

+ w  w# A; z1 v' _: e6 @
% _6 U" ^# M4 M8 f(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過6 P1 {9 W* n, d5 h7 P, F
諗左一陣先諗到

playbr2

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

karen0123

(哭)~~~~~其實我都知係0.........; j* G0 K  n  ?# ~$ O4 N

+ t, ?$ f, @9 W0 h" p9 [  n0 S這條問題，貼落吹水版，名副其實0 U- f& G: s6 K5 V2 l5 H0 U

! b- i( s2 I1 Q6 E( u[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]