| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, v8 w2 G: l5 G7 k8 D4 x1 @; o6 ^

. |  D1 m8 V7 \(x - a) = x - a( n5 b9 m6 t- \/ R! _
(x - a) (x - b) = x^2 – ax – bx + ab4 S8 b, u8 u2 `) M
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 j' b3 ]4 V. v1 ]5 w
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
# E* `8 y7 t4 j' u* m7 q: D如此種推，
# |2 _( F6 n/ G/ {(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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+ i/ d8 z% Q$ r# p/ d7 m! k[ 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6 P6 z6 L) t' ]% {$ o& m

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ X4 s$ F; O2 V& q8 M. X( V(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- g5 R7 u3 J2 ]) f6 p

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[ 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 C9 u( x& \) w* n, x
咁難既=.="3 R8 ]* W* u; D3 D! d6 l
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 Z* u( H/ F4 o% q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:* \0 `0 V4 |# d% h  h
; a: z1 V5 {2 I2 V2 j; u

/ {6 X# n& A2 {. I. c, W0 }(x-x)= 0 ，所以答案係0，is it?

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/ L# S1 q" N; ^$ }! N; q! u4 r8 N
0 q2 o3 D4 G4 d5 g4 \, n唔似a.math題
0 }) {1 x( Y& n4 {1 P似IQ題=.=
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2 s6 {+ `* H" N[ 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:
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+ a* b# ^* U/ ?/ F2 Z1 S; r; j, J% H9 N! J! z! s9 p
(x-x)= 0 ，所以答案係0，is it?

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9 r7 _8 p8 G; iBingo~

waikong

我係學校個學生會單張見過
' W! w% G# |+ j+ e0 s, Y# g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.........
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8 L2 \! ~. I; G+ t& ~) f/ Q這條問題，貼落吹水版，名副其實3 n# T# \- ], P; }6 Q1 R

" O# h& Q! m. u' s* u) X0 }/ Z[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]